1944925920 has 144 divisors (see below), whose sum is σ = 7585250400. Its totient is φ = 444552192.

The previous prime is 1944925901. The next prime is 1944925963. The reversal of 1944925920 is 295294491.

1944925920 is a `hidden beast` number, since 1 + 94 + 492 + 59 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 86395 + ... + 106554.

It is an arithmetic number, because the mean of its divisors is an integer number (52675350).

Almost surely, 2^1944925920 is an apocalyptic number.

1944925920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1944925920 is an abundant number, since it is smaller than the sum of its proper divisors (5640324480).

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

1944925920 is a wasteful number, since it uses less digits than its factorization.

1944925920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192977 (or 192966 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 1944925920 is about 44101.3142661304. The cubic root of 1944925920 is about 1248.2484096247.

It can be divided in two parts, 19449 and 25920, that added together give a square (45369 = 213²).

The spelling of 1944925920 in words is "one billion, nine hundred forty-four million, nine hundred twenty-five thousand, nine hundred twenty".