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1938301093 = 19657715511
BaseRepresentation
bin111001110001000…
…0010000010100101
312000002020220020101
41303202002002211
512432201113333
6520200304101
766014200411
oct16342020245
95002226211
101938301093
11905136333
12461172031
1324b754031
141455d7d41
15b527667d
hex738820a5

1938301093 has 8 divisors (see below), whose sum is σ = 2040758720. Its totient is φ = 1835887680.

The previous prime is 1938301073. The next prime is 1938301139. The reversal of 1938301093 is 3901038391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1938301093 - 213 = 1938292901 is a prime.

It is a super-2 number, since 2×19383010932 = 7514022254249989298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938301033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117208 + ... + 132718.

It is an arithmetic number, because the mean of its divisors is an integer number (255094840).

Almost surely, 21938301093 is an apocalyptic number.

It is an amenable number.

1938301093 is a deficient number, since it is larger than the sum of its proper divisors (102457627).

1938301093 is a wasteful number, since it uses less digits than its factorization.

1938301093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22107.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 1938301093 is about 44026.1410187175. The cubic root of 1938301093 is about 1246.8295318106.

It can be divided in two parts, 1938 and 301093, that added together give a triangular number (303031 = T778).

The spelling of 1938301093 in words is "one billion, nine hundred thirty-eight million, three hundred one thousand, ninety-three".

Divisors: 1 19 6577 15511 124963 294709 102015847 1938301093