1679999944 has 16 divisors (see below), whose sum is σ = 3600000000. Its totient is φ = 719999952.

The previous prime is 1679999917. The next prime is 1679999947. The reversal of 1679999944 is 4499999761.

It is a self number, because there is not a number n which added to its sum of digits gives 1679999944.

It is not an unprimeable number, because it can be changed into a prime (1679999947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14999944 + ... + 15000055.

It is an arithmetic number, because the mean of its divisors is an integer number (225000000).

Almost surely, 2^1679999944 is an apocalyptic number.

1679999944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1679999944 is an abundant number, since it is smaller than the sum of its proper divisors (1920000056).

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

1679999944 is a wasteful number, since it uses less digits than its factorization.

1679999944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30000012 (or 30000008 counting only the distinct ones).

The product of its digits is 39680928, while the sum is 67.

The square root of 1679999944 is about 40987.8023807083. The cubic root of 1679999944 is about 1188.7843773439.

The spelling of 1679999944 in words is "one billion, six hundred seventy-nine million, nine hundred ninety-nine thousand, nine hundred forty-four".