2156183229 has 4 divisors (see below), whose sum is σ = 2874910976. Its totient is φ = 1437455484.

The previous prime is 2156183203. The next prime is 2156183243. The reversal of 2156183229 is 9223816512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2156183229 - 2⁷ = 2156183101 is a prime.

It is a super-2 number, since 2×2156183229² = 9298252234041732882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156183629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359363869 + ... + 359363874.

It is an arithmetic number, because the mean of its divisors is an integer number (718727744).

Almost surely, 2^2156183229 is an apocalyptic number.

It is an amenable number.

2156183229 is a deficient number, since it is larger than the sum of its proper divisors (718727747).

2156183229 is an equidigital number, since it uses as much as digits as its factorization.

2156183229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718727746.

The product of its digits is 51840, while the sum is 39.

The square root of 2156183229 is about 46434.7200809911. The cubic root of 2156183229 is about 1291.8989777220.

The spelling of 2156183229 in words is "two billion, one hundred fifty-six million, one hundred eighty-three thousand, two hundred twenty-nine".