3661442531 has 8 divisors (see below), whose sum is σ = 3839587680. Its totient is φ = 3486756672.

The previous prime is 3661442527. The next prime is 3661442549. The reversal of 3661442531 is 1352441663.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3661442531 - 2² = 3661442527 is a prime.

It is a super-2 number, since 2×3661442531² = 26812322815631371922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3661442491 and 3661442500.

It is not an unprimeable number, because it can be changed into a prime (3661442501) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 862655 + ... + 866888.

It is an arithmetic number, because the mean of its divisors is an integer number (479948460).

Almost surely, 2^3661442531 is an apocalyptic number.

3661442531 is a deficient number, since it is larger than the sum of its proper divisors (178145149).

3661442531 is a wasteful number, since it uses less digits than its factorization.

3661442531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729645.

The product of its digits is 51840, while the sum is 35.

The square root of 3661442531 is about 60509.8548254745. The cubic root of 3661442531 is about 1541.2889825209.

It can be divided in two parts, 366 and 1442531, that added together give a cube (1442897 = 113³).

The spelling of 3661442531 in words is "three billion, six hundred sixty-one million, four hundred forty-two thousand, five hundred thirty-one".