2051539420 has 48 divisors (see below), whose sum is σ = 4927866048. Its totient is φ = 702789120.

The previous prime is 2051539403. The next prime is 2051539439. The reversal of 2051539420 is 249351502.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 179394 + ... + 190486.

It is an arithmetic number, because the mean of its divisors is an integer number (102663876).

Almost surely, 2^2051539420 is an apocalyptic number.

2051539420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051539420 is an abundant number, since it is smaller than the sum of its proper divisors (2876326628).

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

2051539420 is a wasteful number, since it uses less digits than its factorization.

2051539420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12430 (or 12428 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 2051539420 is about 45293.9225503820. The cubic root of 2051539420 is about 1270.6519933267.

The spelling of 2051539420 in words is "two billion, fifty-one million, five hundred thirty-nine thousand, four hundred twenty".