2155380268 has 6 divisors (see below), whose sum is σ = 3771915476. Its totient is φ = 1077690132.

The previous prime is 2155380263. The next prime is 2155380281. The reversal of 2155380268 is 8620835512.

It is a self number, because there is not a number n which added to its sum of digits gives 2155380268.

It is not an unprimeable number, because it can be changed into a prime (2155380263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269422530 + ... + 269422537.

Almost surely, 2^2155380268 is an apocalyptic number.

It is an amenable number.

2155380268 is a deficient number, since it is larger than the sum of its proper divisors (1616535208).

2155380268 is a wasteful number, since it uses less digits than its factorization.

2155380268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538845071 (or 538845069 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 2155380268 is about 46426.0731486091. The cubic root of 2155380268 is about 1291.7385904110.

The spelling of 2155380268 in words is "two billion, one hundred fifty-five million, three hundred eighty thousand, two hundred sixty-eight".