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6939301957 = 76721170123
BaseRepresentation
bin1100111011001110…
…10101100001000101
3122220121112001201121
412131213111201011
5103202430130312
63104325153541
7333651044020
oct63547254105
918817461647
106939301957
112a410672a5
121417b5b8b1
13867873343
1449b87a1b7
152a9329707
hex19d9d5845

6939301957 has 16 divisors (see below), whose sum is σ = 8087260672. Its totient is φ = 5831345520.

The previous prime is 6939301949. The next prime is 6939301997. The reversal of 6939301957 is 7591039396.

It is not a de Polignac number, because 6939301957 - 23 = 6939301949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6939301907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63898 + ... + 134020.

It is an arithmetic number, because the mean of its divisors is an integer number (505453792).

Almost surely, 26939301957 is an apocalyptic number.

6939301957 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

6939301957 is a deficient number, since it is larger than the sum of its proper divisors (1147958715).

6939301957 is a wasteful number, since it uses less digits than its factorization.

6939301957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70408.

The product of its (nonzero) digits is 1377810, while the sum is 52.

The square root of 6939301957 is about 83302.4726943925. The cubic root of 6939301957 is about 1907.3860203397.

The spelling of 6939301957 in words is "six billion, nine hundred thirty-nine million, three hundred one thousand, nine hundred fifty-seven".

Divisors: 1 7 67 211 469 1477 14137 70123 98959 490861 4698241 14795953 32887687 103571671 991328851 6939301957