7936406538 has 32 divisors (see below), whose sum is σ = 16347381120. Its totient is φ = 2566774080.

The previous prime is 7936406479. The next prime is 7936406561. The reversal of 7936406538 is 8356046397.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29908 + ... + 129488.

It is an arithmetic number, because the mean of its divisors is an integer number (510855660).

Almost surely, 2^7936406538 is an apocalyptic number.

7936406538 is an abundant number, since it is smaller than the sum of its proper divisors (8410974582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7936406538 is a wasteful number, since it uses less digits than its factorization.

7936406538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99982.

The product of its (nonzero) digits is 3265920, while the sum is 51.

The square root of 7936406538 is about 89086.5115379427. The cubic root of 7936406538 is about 1994.6864403773.

The spelling of 7936406538 in words is "seven billion, nine hundred thirty-six million, four hundred six thousand, five hundred thirty-eight".