902386561 has 2 divisors, whose sum is σ = 902386562. Its totient is φ = 902386560.

The previous prime is 902386559. The next prime is 902386633. The reversal of 902386561 is 165683209.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 782264961 + 120121600 = 27969^2 + 10960^2 .

It is a cyclic number.

It is not a de Polignac number, because 902386561 - 2¹ = 902386559 is a prime.

Together with 902386559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (902386861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 451193280 + 451193281.

It is an arithmetic number, because the mean of its divisors is an integer number (451193281).

Almost surely, 2^902386561 is an apocalyptic number.

It is an amenable number.

902386561 is a deficient number, since it is larger than the sum of its proper divisors (1).

902386561 is an equidigital number, since it uses as much as digits as its factorization.

902386561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 902386561 is about 30039.7496827121. The cubic root of 902386561 is about 966.3420385309.

The spelling of 902386561 in words is "nine hundred two million, three hundred eighty-six thousand, five hundred sixty-one".