90943290918 has 56 divisors (see below), whose sum is σ = 204734857800. Its totient is φ = 30283896384.

The previous prime is 90943290883. The next prime is 90943290937. The reversal of 90943290918 is 81909234909.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1440213 + ... + 1502031.

Almost surely, 2^90943290918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90943290918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102367428900).

90943290918 is an abundant number, since it is smaller than the sum of its proper divisors (113791566882).

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

90943290918 is a wasteful number, since it uses less digits than its factorization.

90943290918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62848 (or 62833 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The spelling of 90943290918 in words is "ninety billion, nine hundred forty-three million, two hundred ninety thousand, nine hundred eighteen".