1564374001 has 4 divisors (see below), whose sum is σ = 1564761600. Its totient is φ = 1563986404.

The previous prime is 1564373989. The next prime is 1564374011. The reversal of 1564374001 is 1004734651.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1004734651 = 47 ⋅21377333.

It is a cyclic number.

It is not a de Polignac number, because 1564374001 - 2⁵ = 1564373969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1564374011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187681 + ... + 195838.

It is an arithmetic number, because the mean of its divisors is an integer number (391190400).

Almost surely, 2^1564374001 is an apocalyptic number.

It is an amenable number.

1564374001 is a deficient number, since it is larger than the sum of its proper divisors (387599).

1564374001 is an equidigital number, since it uses as much as digits as its factorization.

1564374001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387598.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1564374001 is about 39552.1680948087. The cubic root of 1564374001 is about 1160.8609346404.

The spelling of 1564374001 in words is "one billion, five hundred sixty-four million, three hundred seventy-four thousand, one".