2149522782 has 32 divisors (see below), whose sum is σ = 4936705920. Its totient is φ = 617087520.

The previous prime is 2149522729. The next prime is 2149522787. The reversal of 2149522782 is 2872259412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149522787) 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, 855813 + ... + 858320.

It is an arithmetic number, because the mean of its divisors is an integer number (154272060).

Almost surely, 2^2149522782 is an apocalyptic number.

2149522782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2149522782 is an abundant number, since it is smaller than the sum of its proper divisors (2787183138).

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

2149522782 is a wasteful number, since it uses less digits than its factorization.

2149522782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714168.

The product of its digits is 161280, while the sum is 42.

The square root of 2149522782 is about 46362.9462178581. The cubic root of 2149522782 is about 1290.5673809632.

The spelling of 2149522782 in words is "two billion, one hundred forty-nine million, five hundred twenty-two thousand, seven hundred eighty-two".