90454818 has 8 divisors (see below), whose sum is σ = 180909648. Its totient is φ = 30151604.

The previous prime is 90454817. The next prime is 90454829. The reversal of 90454818 is 81845409.

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

90454818 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (90454813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7537896 + ... + 7537907.

It is an arithmetic number, because the mean of its divisors is an integer number (22613706).

Almost surely, 2^90454818 is an apocalyptic number.

90454818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90454818 is a wasteful number, since it uses less digits than its factorization.

90454818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15075808.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 90454818 is about 9510.7737855550. The cubic root of 90454818 is about 448.8941041894.

The spelling of 90454818 in words is "ninety million, four hundred fifty-four thousand, eight hundred eighteen".