90106184894 has 24 divisors (see below), whose sum is σ = 148908370464. Its totient is φ = 40862280800.

The previous prime is 90106184893. The next prime is 90106184897. The reversal of 90106184894 is 49848160109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90106184891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 327647 + ... + 536250.

It is an arithmetic number, because the mean of its divisors is an integer number (6204515436).

Almost surely, 2^90106184894 is an apocalyptic number.

90106184894 is a deficient number, since it is larger than the sum of its proper divisors (58802185570).

90106184894 is a wasteful number, since it uses less digits than its factorization.

90106184894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864352 (or 864341 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 50.

The spelling of 90106184894 in words is "ninety billion, one hundred six million, one hundred eighty-four thousand, eight hundred ninety-four".