3664733638 has 8 divisors (see below), whose sum is σ = 5502498120. Its totient is φ = 1830567600.

The previous prime is 3664733593. The next prime is 3664733641. The reversal of 3664733638 is 8363374663.

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

It is a junction number, because it is equal to n+sod(n) for n = 3664733591 and 3664733600.

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 3 ways as a sum of consecutive naturals, for example, 897063 + ... + 901138.

It is an arithmetic number, because the mean of its divisors is an integer number (687812265).

Almost surely, 2^3664733638 is an apocalyptic number.

3664733638 is a deficient number, since it is larger than the sum of its proper divisors (1837764482).

3664733638 is a wasteful number, since it uses less digits than its factorization.

3664733638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799222.

The product of its digits is 3919104, while the sum is 49.

The square root of 3664733638 is about 60537.0435188241. The cubic root of 3664733638 is about 1541.7506428134.

The spelling of 3664733638 in words is "three billion, six hundred sixty-four million, seven hundred thirty-three thousand, six hundred thirty-eight".