7917137690 has 96 divisors (see below), whose sum is σ = 17944198272. Its totient is φ = 2461852800.

The previous prime is 7917137689. The next prime is 7917137713. The reversal of 7917137690 is 967317197.

It is a happy number.

It is a super-2 number, since 2×7917137690² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4835552 + ... + 4837188.

It is an arithmetic number, because the mean of its divisors is an integer number (186918732).

Almost surely, 2^7917137690 is an apocalyptic number.

7917137690 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7917137690 is an abundant number, since it is smaller than the sum of its proper divisors (10027060582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7917137690 is a wasteful number, since it uses less digits than its factorization.

7917137690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244 (or 2233 counting only the distinct ones).

The product of its (nonzero) digits is 500094, while the sum is 50.

The square root of 7917137690 is about 88978.2989835162. The cubic root of 7917137690 is about 1993.0708285157.

The spelling of 7917137690 in words is "seven billion, nine hundred seventeen million, one hundred thirty-seven thousand, six hundred ninety".