1944979900 has 36 divisors (see below), whose sum is σ = 4261605712. Its totient is φ = 770434560.

The previous prime is 1944979847. The next prime is 1944979961. The reversal of 1944979900 is 99794491.

It is a super-2 number, since 2×1944979900² = 7565893622808020000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84117 + ... + 104716.

Almost surely, 2^1944979900 is an apocalyptic number.

1944979900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1944979900 is an abundant number, since it is smaller than the sum of its proper divisors (2316625812).

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

1944979900 is a wasteful number, since it uses less digits than its factorization.

1944979900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188950 (or 188943 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 1944979900 is about 44101.9262617859. The cubic root of 1944979900 is about 1248.2599575925.

The spelling of 1944979900 in words is "one billion, nine hundred forty-four million, nine hundred seventy-nine thousand, nine hundred".