7985890737 has 24 divisors (see below), whose sum is σ = 13004271840. Its totient is φ = 4839931800.

The previous prime is 7985890723. The next prime is 7985890753. The reversal of 7985890737 is 7370985897.

It is not a de Polignac number, because 7985890737 - 2⁴ = 7985890721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7985890037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1218939 + ... + 1225472.

It is an arithmetic number, because the mean of its divisors is an integer number (541844660).

Almost surely, 2^7985890737 is an apocalyptic number.

It is an amenable number.

7985890737 is a deficient number, since it is larger than the sum of its proper divisors (5018381103).

7985890737 is a wasteful number, since it uses less digits than its factorization.

7985890737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444442 (or 2444425 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 63.

The square root of 7985890737 is about 89363.8111150146. The cubic root of 7985890737 is about 1998.8235361855.

The spelling of 7985890737 in words is "seven billion, nine hundred eighty-five million, eight hundred ninety thousand, seven hundred thirty-seven".