3651686495 has 4 divisors (see below), whose sum is σ = 4382023800. Its totient is φ = 2921349192.

The previous prime is 3651686459. The next prime is 3651686543. The reversal of 3651686495 is 5946861563.

It is a happy number.

3651686495 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5946861563 = 233 ⋅25523011.

It is a cyclic number.

It is not a de Polignac number, because 3651686495 - 2⁶ = 3651686431 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365168645 + ... + 365168654.

It is an arithmetic number, because the mean of its divisors is an integer number (1095505950).

Almost surely, 2^3651686495 is an apocalyptic number.

3651686495 is a deficient number, since it is larger than the sum of its proper divisors (730337305).

3651686495 is an equidigital number, since it uses as much as digits as its factorization.

3651686495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730337304.

The product of its digits is 4665600, while the sum is 53.

The square root of 3651686495 is about 60429.1857879949. The cubic root of 3651686495 is about 1539.9188261875.

The spelling of 3651686495 in words is "three billion, six hundred fifty-one million, six hundred eighty-six thousand, four hundred ninety-five".