90422308237 has 2 divisors, whose sum is σ = 90422308238. Its totient is φ = 90422308236.

The previous prime is 90422308213. The next prime is 90422308247. The reversal of 90422308237 is 73280322409.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89864451076 + 557857161 = 299774^2 + 23619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90422308237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90422308237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90422308247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45211154118 + 45211154119.

It is an arithmetic number, because the mean of its divisors is an integer number (45211154119).

Almost surely, 2^90422308237 is an apocalyptic number.

It is an amenable number.

90422308237 is a deficient number, since it is larger than the sum of its proper divisors (1).

90422308237 is an equidigital number, since it uses as much as digits as its factorization.

90422308237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 90422308237 in words is "ninety billion, four hundred twenty-two million, three hundred eight thousand, two hundred thirty-seven".