2149590780 has 72 divisors (see below), whose sum is σ = 6745284000. Its totient is φ = 553456512.

The previous prime is 2149590761. The next prime is 2149590797. The reversal of 2149590780 is 870959412.

2149590780 is a `hidden beast` number, since 2 + 1 + 495 + 90 + 78 + 0 = 666.

It is a super-2 number, since 2×2149590780² = 9241481042922016800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200680 + ... + 211119.

It is an arithmetic number, because the mean of its divisors is an integer number (93684500).

Almost surely, 2^2149590780 is an apocalyptic number.

2149590780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2149590780 is an abundant number, since it is smaller than the sum of its proper divisors (4595693220).

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

2149590780 is a wasteful number, since it uses less digits than its factorization.

2149590780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411843 (or 411838 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 2149590780 is about 46363.6795347393. The cubic root of 2149590780 is about 1290.5809894218.

The spelling of 2149590780 in words is "two billion, one hundred forty-nine million, five hundred ninety thousand, seven hundred eighty".