3661379880 has 64 divisors (see below), whose sum is σ = 10989120960. Its totient is φ = 975925248.

The previous prime is 3661379873. The next prime is 3661379903. The reversal of 3661379880 is 889731663.

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, 324819 + ... + 335901.

It is an arithmetic number, because the mean of its divisors is an integer number (171705015).

Almost surely, 2^3661379880 is an apocalyptic number.

3661379880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3661379880 is an abundant number, since it is smaller than the sum of its proper divisors (7327741080).

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

3661379880 is a wasteful number, since it uses less digits than its factorization.

3661379880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13850 (or 13846 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 3661379880 is about 60509.3371307272. The cubic root of 3661379880 is about 1541.2801914642.

The spelling of 3661379880 in words is "three billion, six hundred sixty-one million, three hundred seventy-nine thousand, eight hundred eighty".