1642630136 has 24 divisors (see below), whose sum is σ = 3582778320. Its totient is φ = 703984176.

The previous prime is 1642630111. The next prime is 1642630153. The reversal of 1642630136 is 6310362461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2094800 + ... + 2095583.

It is an arithmetic number, because the mean of its divisors is an integer number (149282430).

Almost surely, 2^1642630136 is an apocalyptic number.

It is an amenable number.

1642630136 is an abundant number, since it is smaller than the sum of its proper divisors (1940148184).

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

1642630136 is a wasteful number, since it uses less digits than its factorization.

1642630136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4190403 (or 4190392 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 1642630136 is about 40529.3737430027. The cubic root of 1642630136 is about 1179.9037879996.

Adding to 1642630136 its reverse (6310362461), we get a palindrome (7952992597).

The spelling of 1642630136 in words is "one billion, six hundred forty-two million, six hundred thirty thousand, one hundred thirty-six".