2131156766 has 8 divisors (see below), whose sum is σ = 3199468584. Its totient is φ = 1064667240.

The previous prime is 2131156739. The next prime is 2131156787. The reversal of 2131156766 is 6676511312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2131156766² = 9083658322535157512, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452645 + ... + 457328.

It is an arithmetic number, because the mean of its divisors is an integer number (399933573).

Almost surely, 2^2131156766 is an apocalyptic number.

2131156766 is a deficient number, since it is larger than the sum of its proper divisors (1068311818).

2131156766 is a wasteful number, since it uses less digits than its factorization.

2131156766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911146.

The product of its digits is 45360, while the sum is 38.

The square root of 2131156766 is about 46164.4534896710. The cubic root of 2131156766 is about 1286.8812278615.

The spelling of 2131156766 in words is "two billion, one hundred thirty-one million, one hundred fifty-six thousand, seven hundred sixty-six".