1939545144 has 48 divisors (see below), whose sum is σ = 5270920200. Its totient is φ = 644301504.

The previous prime is 1939545131. The next prime is 1939545149. The reversal of 1939545144 is 4415459391.

1939545144 is a `hidden beast` number, since 1 + 93 + 9 + 545 + 14 + 4 = 666.

It is a super-2 number, since 2×1939545144² = 7523670731227961472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1939545144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1939545149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24874 + ... + 67065.

Almost surely, 2^1939545144 is an apocalyptic number.

It is an amenable number.

1939545144 is an abundant number, since it is smaller than the sum of its proper divisors (3331375056).

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

1939545144 is a wasteful number, since it uses less digits than its factorization.

1939545144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92244 (or 92237 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 1939545144 is about 44040.2673016411. The cubic root of 1939545144 is about 1247.0962237434.

The spelling of 1939545144 in words is "one billion, nine hundred thirty-nine million, five hundred forty-five thousand, one hundred forty-four".