90158219 has 2 divisors, whose sum is σ = 90158220. Its totient is φ = 90158218.

The previous prime is 90158171. The next prime is 90158239. The reversal of 90158219 is 91285109.

It is a strong prime.

It is an emirp because it is prime and its reverse (91285109) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90158219 - 2¹² = 90154123 is a prime.

It is a super-2 number, since 2×90158219² = 16257008906503922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90158239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45079109 + 45079110.

It is an arithmetic number, because the mean of its divisors is an integer number (45079110).

Almost surely, 2^90158219 is an apocalyptic number.

90158219 is a deficient number, since it is larger than the sum of its proper divisors (1).

90158219 is an equidigital number, since it uses as much as digits as its factorization.

90158219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 90158219 is about 9495.1681922965. The cubic root of 90158219 is about 448.4029295765.

The spelling of 90158219 in words is "ninety million, one hundred fifty-eight thousand, two hundred nineteen".