1945556120 has 16 divisors (see below), whose sum is σ = 4377501360. Its totient is φ = 778222432.

The previous prime is 1945556111. The next prime is 1945556153. The reversal of 1945556120 is 216555491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24319412 + ... + 24319491.

It is an arithmetic number, because the mean of its divisors is an integer number (273593835).

Almost surely, 2^1945556120 is an apocalyptic number.

1945556120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1945556120 is an abundant number, since it is smaller than the sum of its proper divisors (2431945240).

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

1945556120 is a wasteful number, since it uses less digits than its factorization.

1945556120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48638914 (or 48638910 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 38.

The square root of 1945556120 is about 44108.4585992301. The cubic root of 1945556120 is about 1248.3832153074.

The spelling of 1945556120 in words is "one billion, nine hundred forty-five million, five hundred fifty-six thousand, one hundred twenty".