1642262564 has 12 divisors (see below), whose sum is σ = 2874245388. Its totient is φ = 821049600.

The previous prime is 1642262551. The next prime is 1642262569. The reversal of 1642262564 is 4652622461.

It can be written as a sum of positive squares in 2 ways, for example, as 876633664 + 765628900 = 29608^2 + 27670^2 .

It is not an unprimeable number, because it can be changed into a prime (1642262569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60044 + ... + 83004.

It is an arithmetic number, because the mean of its divisors is an integer number (239520449).

Almost surely, 2^1642262564 is an apocalyptic number.

It is an amenable number.

1642262564 is a deficient number, since it is larger than the sum of its proper divisors (1231982824).

1642262564 is a wasteful number, since it uses less digits than its factorization.

1642262564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40846 (or 40844 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The square root of 1642262564 is about 40524.8388522397. The cubic root of 1642262564 is about 1179.8157722539.

The spelling of 1642262564 in words is "one billion, six hundred forty-two million, two hundred sixty-two thousand, five hundred sixty-four".