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1371946069 = 13671575139
BaseRepresentation
bin101000111000110…
…0011110001010101
310112121120002012101
41101301203301111
510302204233234
6344045322101
745666230524
oct12161436125
93477502171
101371946069
1164447842a
12323566331
1318b308510
14d02cc4bb
15806a2814
hex51c63c55

1371946069 has 8 divisors (see below), whose sum is σ = 1499533280. Its totient is φ = 1247509296.

The previous prime is 1371946063. The next prime is 1371946073. The reversal of 1371946069 is 9606491731.

It is a happy number.

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 1371946069 - 219 = 1371421781 is a prime.

It is a super-2 number, since 2×13719460692 = 3764472032489105522, 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 (1371946063) 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, 786699 + ... + 788440.

It is an arithmetic number, because the mean of its divisors is an integer number (187441660).

Almost surely, 21371946069 is an apocalyptic number.

It is an amenable number.

1371946069 is a deficient number, since it is larger than the sum of its proper divisors (127587211).

1371946069 is a wasteful number, since it uses less digits than its factorization.

1371946069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575219.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 1371946069 is about 37039.7903476788. The cubic root of 1371946069 is about 1111.1661766417.

The spelling of 1371946069 in words is "one billion, three hundred seventy-one million, nine hundred forty-six thousand, sixty-nine".

Divisors: 1 13 67 871 1575139 20476807 105534313 1371946069