3651378532 has 12 divisors (see below), whose sum is σ = 6477445996. Its totient is φ = 1800679680.

The previous prime is 3651378517. The next prime is 3651378553. The reversal of 3651378532 is 2358731563.

It can be written as a sum of positive squares in 2 ways, for example, as 1627638336 + 2023740196 = 40344^2 + 44986^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6252069 + ... + 6252652.

Almost surely, 2^3651378532 is an apocalyptic number.

It is an amenable number.

3651378532 is a deficient number, since it is larger than the sum of its proper divisors (2826067464).

3651378532 is a wasteful number, since it uses less digits than its factorization.

3651378532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12504798 (or 12504796 counting only the distinct ones).

The product of its digits is 453600, while the sum is 43.

The square root of 3651378532 is about 60426.6376029645. The cubic root of 3651378532 is about 1539.8755355641.

The spelling of 3651378532 in words is "three billion, six hundred fifty-one million, three hundred seventy-eight thousand, five hundred thirty-two".