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1388374153 = 31439911051
BaseRepresentation
bin101001011000000…
…1110100010001001
310120202110201021221
41102300032202021
510320410433103
6345433402041
746255662025
oct12260164211
93522421257
101388374153
11652779061
12328b69321
1319183ab8a
14d2567385
1581d4a1bd
hex52c0e889

1388374153 has 16 divisors (see below), whose sum is σ = 1469366272. Its totient is φ = 1309770000.

The previous prime is 1388374151. The next prime is 1388374157. The reversal of 1388374153 is 3514738831.

It is a cyclic number.

It is not a de Polignac number, because 1388374153 - 21 = 1388374151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (1388374151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1320478 + ... + 1321528.

It is an arithmetic number, because the mean of its divisors is an integer number (91835392).

Almost surely, 21388374153 is an apocalyptic number.

It is an amenable number.

1388374153 is a deficient number, since it is larger than the sum of its proper divisors (80992119).

1388374153 is a wasteful number, since it uses less digits than its factorization.

1388374153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116.

The product of its digits is 241920, while the sum is 43.

The square root of 1388374153 is about 37260.8930784006. The cubic root of 1388374153 is about 1115.5837339736.

The spelling of 1388374153 in words is "one billion, three hundred eighty-eight million, three hundred seventy-four thousand, one hundred fifty-three".

Divisors: 1 31 43 991 1051 1333 30721 32581 42613 45193 1041541 1321003 1400983 32287771 44786263 1388374153