2149902755 has 32 divisors (see below), whose sum is σ = 3463907328. Its totient is φ = 1237104000.

The previous prime is 2149902749. The next prime is 2149902757. The reversal of 2149902755 is 5572099412.

It is not a de Polignac number, because 2149902755 - 2¹⁰ = 2149901731 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2149902757) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 209771 + ... + 219780.

It is an arithmetic number, because the mean of its divisors is an integer number (108247104).

Almost surely, 2^2149902755 is an apocalyptic number.

2149902755 is a deficient number, since it is larger than the sum of its proper divisors (1314004573).

2149902755 is a wasteful number, since it uses less digits than its factorization.

2149902755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429587.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 2149902755 is about 46367.0438458179. The cubic root of 2149902755 is about 1290.6434213866.

The spelling of 2149902755 in words is "two billion, one hundred forty-nine million, nine hundred two thousand, seven hundred fifty-five".