7908390538 has 16 divisors (see below), whose sum is σ = 12318324480. Its totient is φ = 3803319856.

The previous prime is 7908390533. The next prime is 7908390547. The reversal of 7908390538 is 8350938097.

It is not an unprimeable number, because it can be changed into a prime (7908390533) 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 7 ways as a sum of consecutive naturals, for example, 243970 + ... + 274477.

It is an arithmetic number, because the mean of its divisors is an integer number (769895280).

Almost surely, 2^7908390538 is an apocalyptic number.

7908390538 is a deficient number, since it is larger than the sum of its proper divisors (4409933942).

7908390538 is a wasteful number, since it uses less digits than its factorization.

7908390538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518741.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 7908390538 is about 88929.1321109118. The cubic root of 7908390538 is about 1992.3365514500.

The spelling of 7908390538 in words is "seven billion, nine hundred eight million, three hundred ninety thousand, five hundred thirty-eight".