3661442040 has 64 divisors (see below), whose sum is σ = 11164419360. Its totient is φ = 960376320.

The previous prime is 3661442039. The next prime is 3661442051. The reversal of 3661442040 is 402441663.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 3661441989 and 3661442007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242779 + ... + 257418.

Almost surely, 2^3661442040 is an apocalyptic number.

3661442040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3661442040 is an abundant number, since it is smaller than the sum of its proper divisors (7502977320).

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

3661442040 is a wasteful number, since it uses less digits than its factorization.

3661442040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500272 (or 500268 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 3661442040 is about 60509.8507682840. The cubic root of 3661442040 is about 1541.2889136252.

The spelling of 3661442040 in words is "three billion, six hundred sixty-one million, four hundred forty-two thousand, forty".