2155371368 has 16 divisors (see below), whose sum is σ = 4042258980. Its totient is φ = 1077435648.

The previous prime is 2155371347. The next prime is 2155371389. The reversal of 2155371368 is 8631735512.

It is an interprime number because it is at equal distance from previous prime (2155371347) and next prime (2155371389).

It can be written as a sum of positive squares in 2 ways, for example, as 1774262884 + 381108484 = 42122^2 + 19522^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8330 + ... + 66182.

Almost surely, 2^2155371368 is an apocalyptic number.

It is an amenable number.

2155371368 is a deficient number, since it is larger than the sum of its proper divisors (1886887612).

2155371368 is a wasteful number, since it uses less digits than its factorization.

2155371368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62516 (or 62512 counting only the distinct ones).

The product of its digits is 151200, while the sum is 41.

The square root of 2155371368 is about 46425.9772971986. The cubic root of 2155371368 is about 1291.7368124588.

The spelling of 2155371368 in words is "two billion, one hundred fifty-five million, three hundred seventy-one thousand, three hundred sixty-eight".