1564742652 has 48 divisors (see below), whose sum is σ = 4075623552. Its totient is φ = 463135680.

The previous prime is 1564742591. The next prime is 1564742671. The reversal of 1564742652 is 2562474651.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132163 + ... + 143514.

It is an arithmetic number, because the mean of its divisors is an integer number (84908824).

Almost surely, 2^1564742652 is an apocalyptic number.

1564742652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1564742652 is an abundant number, since it is smaller than the sum of its proper divisors (2510880900).

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

1564742652 is a wasteful number, since it uses less digits than its factorization.

1564742652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275738 (or 275736 counting only the distinct ones).

The product of its digits is 403200, while the sum is 42.

The square root of 1564742652 is about 39556.8281337116. The cubic root of 1564742652 is about 1160.9521146550.

The spelling of 1564742652 in words is "one billion, five hundred sixty-four million, seven hundred forty-two thousand, six hundred fifty-two".