1944361920 has 56 divisors (see below), whose sum is σ = 6173352144. Its totient is φ = 518496256.

The previous prime is 1944361897. The next prime is 1944361967. The reversal of 1944361920 is 291634491.

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, 1011729 + ... + 1013648.

Almost surely, 2^1944361920 is an apocalyptic number.

1944361920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1944361920 is an abundant number, since it is smaller than the sum of its proper divisors (4228990224).

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

1944361920 is a wasteful number, since it uses less digits than its factorization.

1944361920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025397 (or 2025387 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 1944361920 is about 44094.9194352365. The cubic root of 1944361920 is about 1248.1277400476.

The spelling of 1944361920 in words is "one billion, nine hundred forty-four million, three hundred sixty-one thousand, nine hundred twenty".