1520234189 has 2 divisors, whose sum is σ = 1520234190. Its totient is φ = 1520234188.

The previous prime is 1520234161. The next prime is 1520234257. The reversal of 1520234189 is 9814320251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1054106089 + 466128100 = 32467^2 + 21590^2 .

It is a cyclic number.

It is not a de Polignac number, because 1520234189 - 2¹⁶ = 1520168653 is a prime.

It is a super-2 number, since 2×1520234189² = 4622223978808975442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1520234119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760117094 + 760117095.

It is an arithmetic number, because the mean of its divisors is an integer number (760117095).

Almost surely, 2^1520234189 is an apocalyptic number.

It is an amenable number.

1520234189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520234189 is an equidigital number, since it uses as much as digits as its factorization.

1520234189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1520234189 is about 38990.1806741133. The cubic root of 1520234189 is about 1149.8384622504.

The spelling of 1520234189 in words is "one billion, five hundred twenty million, two hundred thirty-four thousand, one hundred eighty-nine".