3630878657 has 4 divisors (see below), whose sum is σ = 4149575616. Its totient is φ = 3112181700.

The previous prime is 3630878651. The next prime is 3630878659. The reversal of 3630878657 is 7568780363.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3630878657 - 2¹² = 3630874561 is a prime.

It is a super-3 number, since 3×3630878657³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3630878599 and 3630878608.

It is not an unprimeable number, because it can be changed into a prime (3630878651) by changing a digit.

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, 259348469 + ... + 259348482.

It is an arithmetic number, because the mean of its divisors is an integer number (1037393904).

Almost surely, 2^3630878657 is an apocalyptic number.

It is an amenable number.

3630878657 is a deficient number, since it is larger than the sum of its proper divisors (518696959).

3630878657 is an equidigital number, since it uses as much as digits as its factorization.

3630878657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518696958.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The square root of 3630878657 is about 60256.7727064767. The cubic root of 3630878657 is about 1536.9883596191.

The spelling of 3630878657 in words is "three billion, six hundred thirty million, eight hundred seventy-eight thousand, six hundred fifty-seven".