1520234161 has 2 divisors, whose sum is σ = 1520234162. Its totient is φ = 1520234160.

The previous prime is 1520234147. The next prime is 1520234189. The reversal of 1520234161 is 1614320251.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1456872561 + 63361600 = 38169^2 + 7960^2 .

It is a cyclic number.

It is not a de Polignac number, because 1520234161 - 2²⁵ = 1486679729 is a prime.

It is a super-2 number, since 2×1520234161² = 4622223808542747842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1520234861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760117080 + 760117081.

It is an arithmetic number, because the mean of its divisors is an integer number (760117081).

Almost surely, 2^1520234161 is an apocalyptic number.

It is an amenable number.

1520234161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520234161 is an equidigital number, since it uses as much as digits as its factorization.

1520234161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1520234161 is about 38990.1803150486. The cubic root of 1520234161 is about 1149.8384551911.

The spelling of 1520234161 in words is "one billion, five hundred twenty million, two hundred thirty-four thousand, one hundred sixty-one".