2155019792 has 10 divisors (see below), whose sum is σ = 4175350878. Its totient is φ = 1077509888.

The previous prime is 2155019791. The next prime is 2155019821. The reversal of 2155019792 is 2979105512.

It can be written as a sum of positive squares in only one way, i.e., 1778814976 + 376204816 = 42176^2 + 19396^2 .

It is a super-2 number, since 2×2155019792² = 9288220607823446528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2155019791) 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 as a sum of consecutive naturals, namely, 67344353 + ... + 67344384.

Almost surely, 2^2155019792 is an apocalyptic number.

It is an amenable number.

2155019792 is a deficient number, since it is larger than the sum of its proper divisors (2020331086).

2155019792 is a wasteful number, since it uses less digits than its factorization.

2155019792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134688745 (or 134688739 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 2155019792 is about 46422.1907281421. The cubic root of 2155019792 is about 1291.6665742370. Note that the first 3 decimals are identical.

The spelling of 2155019792 in words is "two billion, one hundred fifty-five million, nineteen thousand, seven hundred ninety-two".