902425189 has 2 divisors, whose sum is σ = 902425190. Its totient is φ = 902425188.

The previous prime is 902425177. The next prime is 902425231. The reversal of 902425189 is 981524209.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 503104900 + 399320289 = 22430^2 + 19983^2 .

It is an emirp because it is prime and its reverse (981524209) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 902425189 - 2⁵ = 902425157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (902725189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 451212594 + 451212595.

It is an arithmetic number, because the mean of its divisors is an integer number (451212595).

Almost surely, 2^902425189 is an apocalyptic number.

It is an amenable number.

902425189 is a deficient number, since it is larger than the sum of its proper divisors (1).

902425189 is an equidigital number, since it uses as much as digits as its factorization.

902425189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 902425189 is about 30040.3926239322. The cubic root of 902425189 is about 966.3558269039.

The spelling of 902425189 in words is "nine hundred two million, four hundred twenty-five thousand, one hundred eighty-nine".