90201001192 has 8 divisors (see below), whose sum is σ = 169126877250. Its totient is φ = 45100500592.

The previous prime is 90201001171. The next prime is 90201001193. The reversal of 90201001192 is 29110010209.

It can be written as a sum of positive squares in only one way, i.e., 89289806596 + 911194596 = 298814^2 + 30186^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (90201001193) 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, 5637562567 + ... + 5637562582.

Almost surely, 2^90201001192 is an apocalyptic number.

It is an amenable number.

90201001192 is a deficient number, since it is larger than the sum of its proper divisors (78925876058).

90201001192 is a wasteful number, since it uses less digits than its factorization.

90201001192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11275125155 (or 11275125151 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 90201001192 in words is "ninety billion, two hundred one million, one thousand, one hundred ninety-two".