3651412617938 has 18 divisors (see below), whose sum is σ = 5498650349829. Its totient is φ = 1818557178552.

The previous prime is 3651412617929. The next prime is 3651412617971. The reversal of 3651412617938 is 8397162141563.

It can be written as a sum of positive squares in 2 ways, for example, as 2730977689489 + 920434928449 = 1652567^2 + 959393^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1351187.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 726936095 + ... + 726941117.

Almost surely, 2^{3651412617938} is an apocalyptic number.

3651412617938 is a deficient number, since it is larger than the sum of its proper divisors (1847237731891).

3651412617938 is an frugal number, since it uses more digits than its factorization.

3651412617938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10586 (or 5294 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The spelling of 3651412617938 in words is "three trillion, six hundred fifty-one billion, four hundred twelve million, six hundred seventeen thousand, nine hundred thirty-eight".