3661893880 has 16 divisors (see below), whose sum is σ = 8239261320. Its totient is φ = 1464757536.

The previous prime is 3661893877. The next prime is 3661893943. The reversal of 3661893880 is 883981663.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45773634 + ... + 45773713.

Almost surely, 2^3661893880 is an apocalyptic number.

It is an amenable number.

3661893880 is an abundant number, since it is smaller than the sum of its proper divisors (4577367440).

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

3661893880 is a wasteful number, since it uses less digits than its factorization.

3661893880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91547358 (or 91547354 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 3661893880 is about 60513.5842600651. The cubic root of 3661893880 is about 1541.3523119011.

The spelling of 3661893880 in words is "three billion, six hundred sixty-one million, eight hundred ninety-three thousand, eight hundred eighty".