90184987740 has 48 divisors (see below), whose sum is σ = 253524055680. Its totient is φ = 23953512000.

The previous prime is 90184987691. The next prime is 90184987787. The reversal of 90184987740 is 4778948109.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2979130 + ... + 3009249.

It is an arithmetic number, because the mean of its divisors is an integer number (5281751160).

Almost surely, 2^90184987740 is an apocalyptic number.

It is an amenable number.

90184987740 is an abundant number, since it is smaller than the sum of its proper divisors (163339067940).

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

90184987740 is a wasteful number, since it uses less digits than its factorization.

90184987740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5988642 (or 5988640 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 57.

The spelling of 90184987740 in words is "ninety billion, one hundred eighty-four million, nine hundred eighty-seven thousand, seven hundred forty".