1570616161 has 3 divisors (see below), whose sum is σ = 1570655793. Its totient is φ = 1570576530.

The previous prime is 1570616153. The next prime is 1570616189. The reversal of 1570616161 is 1616160751.

The square root of 1570616161 is 39631.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1570616161 - 2³ = 1570616153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1570616101) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 19816 + ... + 59446.

It is an arithmetic number, because the mean of its divisors is an integer number (523551931).

Almost surely, 2^1570616161 is an apocalyptic number.

1570616161 is the 39631-st square number.

1570616161 is the 19816-th centered octagonal number.

It is an amenable number.

1570616161 is a deficient number, since it is larger than the sum of its proper divisors (39632).

1570616161 is an frugal number, since it uses more digits than its factorization.

1570616161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79262 (or 39631 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The cubic root of 1570616161 is about 1162.4029066941.

The spelling of 1570616161 in words is "one billion, five hundred seventy million, six hundred sixteen thousand, one hundred sixty-one".