7890611131 has 16 divisors (see below), whose sum is σ = 8794648800. Its totient is φ = 7029243648.

The previous prime is 7890611123. The next prime is 7890611143. The reversal of 7890611131 is 1311160987.

It is not a de Polignac number, because 7890611131 - 2³ = 7890611123 is a prime.

It is a super-2 number, since 2×7890611131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7890611111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1243575 + ... + 1249903.

It is an arithmetic number, because the mean of its divisors is an integer number (549665550).

Almost surely, 2^7890611131 is an apocalyptic number.

7890611131 is a deficient number, since it is larger than the sum of its proper divisors (904037669).

7890611131 is a wasteful number, since it uses less digits than its factorization.

7890611131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9678.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 7890611131 is about 88829.1119566103. Note that the first 3 decimals coincide. The cubic root of 7890611131 is about 1990.8423940410.

The spelling of 7890611131 in words is "seven billion, eight hundred ninety million, six hundred eleven thousand, one hundred thirty-one".