2149591254 has 16 divisors (see below), whose sum is σ = 4340923392. Its totient is φ = 709573608.

The previous prime is 2149591253. The next prime is 2149591267. The reversal of 2149591254 is 4521959412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149591253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1738534 + ... + 1739769.

It is an arithmetic number, because the mean of its divisors is an integer number (271307712).

Almost surely, 2^2149591254 is an apocalyptic number.

2149591254 is an abundant number, since it is smaller than the sum of its proper divisors (2191332138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2149591254 is a wasteful number, since it uses less digits than its factorization.

2149591254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3478411.

The product of its digits is 129600, while the sum is 42.

The square root of 2149591254 is about 46363.6846464989. The cubic root of 2149591254 is about 1290.5810842825.

The spelling of 2149591254 in words is "two billion, one hundred forty-nine million, five hundred ninety-one thousand, two hundred fifty-four".