315420485189 has 2 divisors, whose sum is σ = 315420485190. Its totient is φ = 315420485188.

The previous prime is 315420485183. The next prime is 315420485239. The reversal of 315420485189 is 981584024513.

It is an a-pointer prime, because the next prime (315420485239) can be obtained adding 315420485189 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206756637025 + 108663848164 = 454705^2 + 329642^2 .

It is a cyclic number.

It is not a de Polignac number, because 315420485189 - 2⁸ = 315420484933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315420485183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157710242594 + 157710242595.

It is an arithmetic number, because the mean of its divisors is an integer number (157710242595).

Almost surely, 2^315420485189 is an apocalyptic number.

It is an amenable number.

315420485189 is a deficient number, since it is larger than the sum of its proper divisors (1).

315420485189 is an equidigital number, since it uses as much as digits as its factorization.

315420485189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382400, while the sum is 50.

The spelling of 315420485189 in words is "three hundred fifteen billion, four hundred twenty million, four hundred eighty-five thousand, one hundred eighty-nine".