890502181 has 2 divisors, whose sum is σ = 890502182. Its totient is φ = 890502180.

The previous prime is 890502133. The next prime is 890502229. The reversal of 890502181 is 181205098.

It is a balanced prime because it is at equal distance from previous prime (890502133) and next prime (890502229).

It can be written as a sum of positive squares in only one way, i.e., 890485281 + 16900 = 29841^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 890502181 - 2¹⁷ = 890371109 is a prime.

It is a super-2 number, since 2×890502181² = 1585988268731513522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (890502581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445251090 + 445251091.

It is an arithmetic number, because the mean of its divisors is an integer number (445251091).

Almost surely, 2^890502181 is an apocalyptic number.

It is an amenable number.

890502181 is a deficient number, since it is larger than the sum of its proper divisors (1).

890502181 is an equidigital number, since it uses as much as digits as its factorization.

890502181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 890502181 is about 29841.2831661107. The cubic root of 890502181 is about 962.0810544412.

The spelling of 890502181 in words is "eight hundred ninety million, five hundred two thousand, one hundred eighty-one".