90149018 has 8 divisors (see below), whose sum is σ = 135330912. Its totient is φ = 45038716.

The previous prime is 90148997. The next prime is 90149047. The reversal of 90149018 is 81094109.

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

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14630 + ... + 19857.

It is an arithmetic number, because the mean of its divisors is an integer number (16916364).

Almost surely, 2^90149018 is an apocalyptic number.

90149018 is a deficient number, since it is larger than the sum of its proper divisors (45181894).

90149018 is a wasteful number, since it uses less digits than its factorization.

90149018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35796.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 90149018 is about 9494.6836703494. The cubic root of 90149018 is about 448.3876752981.

The spelling of 90149018 in words is "ninety million, one hundred forty-nine thousand, eighteen".