2131665190 has 32 divisors (see below), whose sum is σ = 4078970784. Its totient is φ = 799296000.

The previous prime is 2131665131. The next prime is 2131665197. The reversal of 2131665190 is 915661312.

It is a super-2 number, since 2×2131665190² = 9087992964515472200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131665197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17692 + ... + 67648.

It is an arithmetic number, because the mean of its divisors is an integer number (127467837).

Almost surely, 2^2131665190 is an apocalyptic number.

2131665190 is a deficient number, since it is larger than the sum of its proper divisors (1947305594).

2131665190 is a wasteful number, since it uses less digits than its factorization.

2131665190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50232.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 2131665190 is about 46169.9598223780. The cubic root of 2131665190 is about 1286.9835555877.

The spelling of 2131665190 in words is "two billion, one hundred thirty-one million, six hundred sixty-five thousand, one hundred ninety".