2054881620 has 72 divisors (see below), whose sum is σ = 6799796640. Its totient is φ = 498152640.

The previous prime is 2054881601. The next prime is 2054881651. The reversal of 2054881620 is 261884502.

2054881620 is a `hidden beast` number, since 20 + 5 + 4 + 8 + 8 + 1 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 516930 + ... + 520889.

It is an arithmetic number, because the mean of its divisors is an integer number (94441620).

Almost surely, 2^2054881620 is an apocalyptic number.

2054881620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2054881620 is an abundant number, since it is smaller than the sum of its proper divisors (4744915020).

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

2054881620 is a wasteful number, since it uses less digits than its factorization.

2054881620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037845 (or 1037840 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 2054881620 is about 45330.8021107061. The cubic root of 2054881620 is about 1271.3416330139.

The spelling of 2054881620 in words is "two billion, fifty-four million, eight hundred eighty-one thousand, six hundred twenty".