90201001193 has 2 divisors, whose sum is σ = 90201001194. Its totient is φ = 90201001192.

The previous prime is 90201001171. The next prime is 90201001207. The reversal of 90201001193 is 39110010209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73334264809 + 16866736384 = 270803^2 + 129872^2 .

It is an emirp because it is prime and its reverse (39110010209) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90201001193 - 2²⁰ = 90199952617 is a prime.

It is not a weakly prime, because it can be changed into another prime (90201001123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45100500596 + 45100500597.

It is an arithmetic number, because the mean of its divisors is an integer number (45100500597).

Almost surely, 2^90201001193 is an apocalyptic number.

It is an amenable number.

90201001193 is a deficient number, since it is larger than the sum of its proper divisors (1).

90201001193 is an equidigital number, since it uses as much as digits as its factorization.

90201001193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 26.

The spelling of 90201001193 in words is "ninety billion, two hundred one million, one thousand, one hundred ninety-three".