8981946731 has 2 divisors, whose sum is σ = 8981946732. Its totient is φ = 8981946730.

The previous prime is 8981946653. The next prime is 8981946737. The reversal of 8981946731 is 1376491898.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8981946731 - 2³⁰ = 7908204907 is a prime.

It is a super-2 number, since 2×8981946731² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8981946737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4490973365 + 4490973366.

It is an arithmetic number, because the mean of its divisors is an integer number (4490973366).

Almost surely, 2^8981946731 is an apocalyptic number.

8981946731 is a deficient number, since it is larger than the sum of its proper divisors (1).

8981946731 is an equidigital number, since it uses as much as digits as its factorization.

8981946731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 56.

The square root of 8981946731 is about 94773.1329597160. The cubic root of 8981946731 is about 2078.6920656526.

The spelling of 8981946731 in words is "eight billion, nine hundred eighty-one million, nine hundred forty-six thousand, seven hundred thirty-one".