1642506764 has 12 divisors (see below), whose sum is σ = 2876284824. Its totient is φ = 820711104.

The previous prime is 1642506709. The next prime is 1642506779. The reversal of 1642506764 is 4676052461.

It is a happy 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, 128717 + ... + 140900.

It is an arithmetic number, because the mean of its divisors is an integer number (239690402).

Almost surely, 2^1642506764 is an apocalyptic number.

It is an amenable number.

1642506764 is a deficient number, since it is larger than the sum of its proper divisors (1233778060).

1642506764 is a wasteful number, since it uses less digits than its factorization.

1642506764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271144 (or 271142 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 1642506764 is about 40527.8517071902. The cubic root of 1642506764 is about 1179.8742478267.

The spelling of 1642506764 in words is "one billion, six hundred forty-two million, five hundred six thousand, seven hundred sixty-four".