3945562112 has 48 divisors (see below), whose sum is σ = 7913809995. Its totient is φ = 1967095808.

The previous prime is 3945562109. The next prime is 3945562123. The reversal of 3945562112 is 2112655493.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 1972781056 + 1972781056 = 44416^2 + 44416^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=44416.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11370323 + ... + 11370669.

Almost surely, 2^3945562112 is an apocalyptic number.

3945562112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3945562112

3945562112 is an abundant number, since it is smaller than the sum of its proper divisors (3968247883).

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

3945562112 is an frugal number, since it uses more digits than its factorization.

3945562112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 349 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 3945562112 is about 62813.7095863634. The cubic root of 3945562112 is about 1580.1669043360.

Multiplying 3945562112 by its product of digits (64800), we get a square (255672424857600 = 15989760²).

The spelling of 3945562112 in words is "three billion, nine hundred forty-five million, five hundred sixty-two thousand, one hundred twelve".