8913620731 has 2 divisors, whose sum is σ = 8913620732. Its totient is φ = 8913620730.

The previous prime is 8913620707. The next prime is 8913620741. The reversal of 8913620731 is 1370263198.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8913620731 - 2¹¹ = 8913618683 is a prime.

It is a super-2 number, since 2×8913620731² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8913620741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4456810365 + 4456810366.

It is an arithmetic number, because the mean of its divisors is an integer number (4456810366).

Almost surely, 2^8913620731 is an apocalyptic number.

8913620731 is a deficient number, since it is larger than the sum of its proper divisors (1).

8913620731 is an equidigital number, since it uses as much as digits as its factorization.

8913620731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 8913620731 is about 94411.9734514643. The cubic root of 8913620731 is about 2073.4077478492.

The spelling of 8913620731 in words is "eight billion, nine hundred thirteen million, six hundred twenty thousand, seven hundred thirty-one".