90181073 has 8 divisors (see below), whose sum is σ = 95569920. Its totient is φ = 84801600.

The previous prime is 90181027. The next prime is 90181081. The reversal of 90181073 is 37018109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90181073 - 2⁶ = 90181009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90186073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31808 + ... + 34526.

It is an arithmetic number, because the mean of its divisors is an integer number (11946240).

Almost surely, 2^90181073 is an apocalyptic number.

It is an amenable number.

90181073 is a deficient number, since it is larger than the sum of its proper divisors (5388847).

90181073 is a wasteful number, since it uses less digits than its factorization.

90181073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 90181073 is about 9496.3715702367. The cubic root of 90181073 is about 448.4408145854.

The spelling of 90181073 in words is "ninety million, one hundred eighty-one thousand, seventy-three".