1642539464 has 32 divisors (see below), whose sum is σ = 3184704000. Its totient is φ = 793378560.

The previous prime is 1642539419. The next prime is 1642539469. The reversal of 1642539464 is 4649352461.

It is not an unprimeable number, because it can be changed into a prime (1642539469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143024 + ... + 154080.

It is an arithmetic number, because the mean of its divisors is an integer number (99522000).

Almost surely, 2^1642539464 is an apocalyptic number.

It is an amenable number.

1642539464 is a deficient number, since it is larger than the sum of its proper divisors (1542164536).

1642539464 is a wasteful number, since it uses less digits than its factorization.

1642539464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11693 (or 11689 counting only the distinct ones).

The product of its digits is 622080, while the sum is 44.

The square root of 1642539464 is about 40528.2551314512. The cubic root of 1642539464 is about 1179.8820776538.

The spelling of 1642539464 in words is "one billion, six hundred forty-two million, five hundred thirty-nine thousand, four hundred sixty-four".