1373642636 has 24 divisors (see below), whose sum is σ = 2547399456. Its totient is φ = 645881600.

The previous prime is 1373642597. The next prime is 1373642651. The reversal of 1373642636 is 6362463731.

It is a junction number, because it is equal to n+sod(n) for n = 1373642593 and 1373642602.

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, 80705 + ... + 96231.

It is an arithmetic number, because the mean of its divisors is an integer number (106141644).

Almost surely, 2^1373642636 is an apocalyptic number.

It is an amenable number.

1373642636 is a deficient number, since it is larger than the sum of its proper divisors (1173756820).

1373642636 is a wasteful number, since it uses less digits than its factorization.

1373642636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16849 (or 16847 counting only the distinct ones).

The product of its digits is 326592, while the sum is 41.

The square root of 1373642636 is about 37062.6852238205. The cubic root of 1373642636 is about 1111.6240156603.

The spelling of 1373642636 in words is "one billion, three hundred seventy-three million, six hundred forty-two thousand, six hundred thirty-six".