2156323719 has 8 divisors (see below), whose sum is σ = 3136470912. Its totient is φ = 1306862840.

The previous prime is 2156323691. The next prime is 2156323721. The reversal of 2156323719 is 9173236512.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2156323719 - 2⁷ = 2156323591 is a prime.

It is a super-2 number, since 2×2156323719² = 9299463962243981922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156323219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32671539 + ... + 32671604.

It is an arithmetic number, because the mean of its divisors is an integer number (392058864).

Almost surely, 2^2156323719 is an apocalyptic number.

2156323719 is a deficient number, since it is larger than the sum of its proper divisors (980147193).

2156323719 is a wasteful number, since it uses less digits than its factorization.

2156323719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65343157.

The product of its digits is 68040, while the sum is 39.

The square root of 2156323719 is about 46436.2328252411. The cubic root of 2156323719 is about 1291.9270357805.

The spelling of 2156323719 in words is "two billion, one hundred fifty-six million, three hundred twenty-three thousand, seven hundred nineteen".