2045556120 has 32 divisors (see below), whose sum is σ = 6136668720. Its totient is φ = 545481600.

The previous prime is 2045556119. The next prime is 2045556181. The reversal of 2045556120 is 216555402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8523031 + ... + 8523270.

Almost surely, 2^2045556120 is an apocalyptic number.

2045556120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2045556120 is an abundant number, since it is smaller than the sum of its proper divisors (4091112600).

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

2045556120 is a wasteful number, since it uses less digits than its factorization.

2045556120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17046315 (or 17046311 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2045556120 is about 45227.8246215756. The cubic root of 2045556120 is about 1269.4155080055.

The spelling of 2045556120 in words is "two billion, forty-five million, five hundred fifty-six thousand, one hundred twenty".