3639544494 has 16 divisors (see below), whose sum is σ = 7351160400. Its totient is φ = 1201169600.

The previous prime is 3639544483. The next prime is 3639544523. The reversal of 3639544494 is 4944459363.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3002319 + ... + 3003530.

It is an arithmetic number, because the mean of its divisors is an integer number (459447525).

Almost surely, 2^3639544494 is an apocalyptic number.

3639544494 is an abundant number, since it is smaller than the sum of its proper divisors (3711615906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3639544494 is a wasteful number, since it uses less digits than its factorization.

3639544494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6005955.

The product of its digits is 5598720, while the sum is 51.

The square root of 3639544494 is about 60328.6374286706. The cubic root of 3639544494 is about 1538.2101674765.

The spelling of 3639544494 in words is "three billion, six hundred thirty-nine million, five hundred forty-four thousand, four hundred ninety-four".