1672849680 has 80 divisors (see below), whose sum is σ = 5458787520. Its totient is φ = 422613504.

The previous prime is 1672849679. The next prime is 1672849723. The reversal of 1672849680 is 869482761.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1672849680² = 5596852103752204800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178867 + ... + 187986.

It is an arithmetic number, because the mean of its divisors is an integer number (68234844).

Almost surely, 2^1672849680 is an apocalyptic number.

1672849680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1672849680 is an abundant number, since it is smaller than the sum of its proper divisors (3785937840).

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

1672849680 is a wasteful number, since it uses less digits than its factorization.

1672849680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366888 (or 366882 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 1672849680 is about 40900.4850826980. The cubic root of 1672849680 is about 1187.0954467553.

The spelling of 1672849680 in words is "one billion, six hundred seventy-two million, eight hundred forty-nine thousand, six hundred eighty".