2149868290 has 32 divisors (see below), whose sum is σ = 3998421504. Its totient is φ = 831409920.

The previous prime is 2149868257. The next prime is 2149868293. The reversal of 2149868290 is 928689412.

It is a Smith number, since the sum of its digits (49) 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 (2149868293) 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, 399397 + ... + 404743.

It is an arithmetic number, because the mean of its divisors is an integer number (124950672).

Almost surely, 2^2149868290 is an apocalyptic number.

2149868290 is a deficient number, since it is larger than the sum of its proper divisors (1848553214).

2149868290 is a wasteful number, since it uses less digits than its factorization.

2149868290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6682.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 2149868290 is about 46366.6721902705. The cubic root of 2149868290 is about 1290.6365245997.

The spelling of 2149868290 in words is "two billion, one hundred forty-nine million, eight hundred sixty-eight thousand, two hundred ninety".