2149599955 has 4 divisors (see below), whose sum is σ = 2579519952. Its totient is φ = 1719679960.

The previous prime is 2149599953. The next prime is 2149599961. The reversal of 2149599955 is 5599959412.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2149599955 - 2¹ = 2149599953 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2149599955.

It is not an unprimeable number, because it can be changed into a prime (2149599953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214959991 + ... + 214960000.

It is an arithmetic number, because the mean of its divisors is an integer number (644879988).

Almost surely, 2^2149599955 is an apocalyptic number.

2149599955 is a deficient number, since it is larger than the sum of its proper divisors (429919997).

2149599955 is an equidigital number, since it uses as much as digits as its factorization.

2149599955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429919996.

The product of its digits is 6561000, while the sum is 58.

The square root of 2149599955 is about 46363.7784806200. The cubic root of 2149599955 is about 1290.5828255951.

The spelling of 2149599955 in words is "two billion, one hundred forty-nine million, five hundred ninety-nine thousand, nine hundred fifty-five".