90194654507 has 2 divisors, whose sum is σ = 90194654508. Its totient is φ = 90194654506.

The previous prime is 90194654497. The next prime is 90194654527. The reversal of 90194654507 is 70545649109.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90194654507 - 2⁶ = 90194654443 is a prime.

It is not a weakly prime, because it can be changed into another prime (90194654527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45097327253 + 45097327254.

It is an arithmetic number, because the mean of its divisors is an integer number (45097327254).

Almost surely, 2^90194654507 is an apocalyptic number.

90194654507 is a deficient number, since it is larger than the sum of its proper divisors (1).

90194654507 is an equidigital number, since it uses as much as digits as its factorization.

90194654507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 90194654507 in words is "ninety billion, one hundred ninety-four million, six hundred fifty-four thousand, five hundred seven".