1561160164 has 6 divisors (see below), whose sum is σ = 2732030294. Its totient is φ = 780580080.

The previous prime is 1561160147. The next prime is 1561160173. The reversal of 1561160164 is 4610611651.

It can be written as a sum of positive squares in only one way, i.e., 1500942564 + 60217600 = 38742^2 + 7760^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195145017 + ... + 195145024.

Almost surely, 2^1561160164 is an apocalyptic number.

It is an amenable number.

1561160164 is a deficient number, since it is larger than the sum of its proper divisors (1170870130).

1561160164 is a wasteful number, since it uses less digits than its factorization.

1561160164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390290045 (or 390290043 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1561160164 is about 39511.5193835924. The cubic root of 1561160164 is about 1160.0654352703.

The spelling of 1561160164 in words is "one billion, five hundred sixty-one million, one hundred sixty thousand, one hundred sixty-four".