8931997748 has 12 divisors (see below), whose sum is σ = 15636664512. Its totient is φ = 4464379320.

The previous prime is 8931997741. The next prime is 8931997799. The reversal of 8931997748 is 8477991398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8931997741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392438 + ... + 414573.

It is an arithmetic number, because the mean of its divisors is an integer number (1303055376).

Almost surely, 2^8931997748 is an apocalyptic number.

It is an amenable number.

8931997748 is a deficient number, since it is larger than the sum of its proper divisors (6704666764).

8931997748 is a wasteful number, since it uses less digits than its factorization.

8931997748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809782 (or 809780 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 65.

The square root of 8931997748 is about 94509.2468915079. The cubic root of 8931997748 is about 2074.8316695500.

The spelling of 8931997748 in words is "eight billion, nine hundred thirty-one million, nine hundred ninety-seven thousand, seven hundred forty-eight".