2149353949 has 4 divisors (see below), whose sum is σ = 2149493536. Its totient is φ = 2149214364.

The previous prime is 2149353919. The next prime is 2149353977. The reversal of 2149353949 is 9493539412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2149353949 - 2¹¹ = 2149351901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149353919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43359 + ... + 78604.

It is an arithmetic number, because the mean of its divisors is an integer number (537373384).

Almost surely, 2^2149353949 is an apocalyptic number.

It is an amenable number.

2149353949 is a deficient number, since it is larger than the sum of its proper divisors (139587).

2149353949 is a wasteful number, since it uses less digits than its factorization.

2149353949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139586.

The product of its digits is 1049760, while the sum is 49.

The square root of 2149353949 is about 46361.1254069614. The cubic root of 2149353949 is about 1290.5335911271.

The spelling of 2149353949 in words is "two billion, one hundred forty-nine million, three hundred fifty-three thousand, nine hundred forty-nine".