7857491962 has 16 divisors (see below), whose sum is σ = 11859138720. Its totient is φ = 3904490128.

The previous prime is 7857491959. The next prime is 7857491963. The reversal of 7857491962 is 2691947587.

It is a junction number, because it is equal to n+sod(n) for n = 7857491897 and 7857491906.

It is not an unprimeable number, because it can be changed into a prime (7857491963) 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, 362589 + ... + 383647.

It is an arithmetic number, because the mean of its divisors is an integer number (741196170).

Almost surely, 2^7857491962 is an apocalyptic number.

7857491962 is a deficient number, since it is larger than the sum of its proper divisors (4001646758).

7857491962 is a wasteful number, since it uses less digits than its factorization.

7857491962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22205.

The product of its digits is 7620480, while the sum is 58.

The square root of 7857491962 is about 88642.4952378937. The cubic root of 7857491962 is about 1988.0531081508.

The spelling of 7857491962 in words is "seven billion, eight hundred fifty-seven million, four hundred ninety-one thousand, nine hundred sixty-two".