2155376830 has 32 divisors (see below), whose sum is σ = 3942986400. Its totient is φ = 848143872.

The previous prime is 2155376809. The next prime is 2155376837. The reversal of 2155376830 is 386735512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155376837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294961 + ... + 302179.

It is an arithmetic number, because the mean of its divisors is an integer number (123218325).

Almost surely, 2^2155376830 is an apocalyptic number.

2155376830 is a deficient number, since it is larger than the sum of its proper divisors (1787609570).

2155376830 is a wasteful number, since it uses less digits than its factorization.

2155376830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7708.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 2155376830 is about 46426.0361219866. The cubic root of 2155376830 is about 1291.7379036026.

The spelling of 2155376830 in words is "two billion, one hundred fifty-five million, three hundred seventy-six thousand, eight hundred thirty".