1564011165 has 16 divisors (see below), whose sum is σ = 2503024128. Its totient is φ = 833937216.

The previous prime is 1564011157. The next prime is 1564011167. The reversal of 1564011165 is 5611104651.

It is not a de Polignac number, because 1564011165 - 2³ = 1564011157 is a prime.

It is a super-2 number, since 2×1564011165² = 4892261848489314450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1564011167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67924 + ... + 87986.

It is an arithmetic number, because the mean of its divisors is an integer number (156439008).

Almost surely, 2^1564011165 is an apocalyptic number.

1564011165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1564011165 is a deficient number, since it is larger than the sum of its proper divisors (939012963).

1564011165 is a wasteful number, since it uses less digits than its factorization.

1564011165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25268.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 1564011165 is about 39547.5810258984. The cubic root of 1564011165 is about 1160.7711788859.

The spelling of 1564011165 in words is "one billion, five hundred sixty-four million, eleven thousand, one hundred sixty-five".