90919818894269 has 2 divisors, whose sum is σ = 90919818894270. Its totient is φ = 90919818894268.

The previous prime is 90919818894259. The next prime is 90919818894319. The reversal of 90919818894269 is 96249881891909.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90161766576025 + 758052318244 = 9495355^2 + 870662^2 .

It is a cyclic number.

It is not a de Polignac number, because 90919818894269 - 2²⁸ = 90919550458813 is a prime.

It is a super-2 number, since 2×90919818894269² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90919818894259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45459909447134 + 45459909447135.

It is an arithmetic number, because the mean of its divisors is an integer number (45459909447135).

Almost surely, 2^{90919818894269} is an apocalyptic number.

It is an amenable number.

90919818894269 is a deficient number, since it is larger than the sum of its proper divisors (1).

90919818894269 is an equidigital number, since it uses as much as digits as its factorization.

90919818894269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451188224, while the sum is 83.

The spelling of 90919818894269 in words is "ninety trillion, nine hundred nineteen billion, eight hundred eighteen million, eight hundred ninety-four thousand, two hundred sixty-nine".