1944101868 has 24 divisors (see below), whose sum is σ = 4540657968. Its totient is φ = 647402496.

The previous prime is 1944101857. The next prime is 1944101891. The reversal of 1944101868 is 8681014491.

It is a happy number.

It is a super-2 number, since 2×1944101868² = 7559064146322178848, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66021 + ... + 90812.

It is an arithmetic number, because the mean of its divisors is an integer number (189194082).

Almost surely, 2^1944101868 is an apocalyptic number.

It is an amenable number.

1944101868 is an abundant number, since it is smaller than the sum of its proper divisors (2596556100).

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

1944101868 is a wasteful number, since it uses less digits than its factorization.

1944101868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157873 (or 157871 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 1944101868 is about 44091.9705615433. The cubic root of 1944101868 is about 1248.0720932424.

The spelling of 1944101868 in words is "one billion, nine hundred forty-four million, one hundred one thousand, eight hundred sixty-eight".