2156246452 has 24 divisors (see below), whose sum is σ = 3817860480. Its totient is φ = 1065478080.

The previous prime is 2156246423. The next prime is 2156246453. The reversal of 2156246452 is 2546426512.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156246453) 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, 178624 + ... + 190312.

It is an arithmetic number, because the mean of its divisors is an integer number (159077520).

Almost surely, 2^2156246452 is an apocalyptic number.

It is an amenable number.

2156246452 is a deficient number, since it is larger than the sum of its proper divisors (1661614028).

2156246452 is a wasteful number, since it uses less digits than its factorization.

2156246452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12231 (or 12229 counting only the distinct ones).

The product of its digits is 115200, while the sum is 37.

The square root of 2156246452 is about 46435.4008489213. The cubic root of 2156246452 is about 1291.9116044985.

The spelling of 2156246452 in words is "two billion, one hundred fifty-six million, two hundred forty-six thousand, four hundred fifty-two".