90837841858 has 4 divisors (see below), whose sum is σ = 136256762790. Its totient is φ = 45418920928.

The previous prime is 90837841847. The next prime is 90837841903. The reversal of 90837841858 is 85814873809.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 78426322209 + 12411519649 = 280047^2 + 111407^2 .

It is a junction number, because it is equal to n+sod(n) for n = 90837841796 and 90837841805.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22709460463 + ... + 22709460466.

Almost surely, 2^90837841858 is an apocalyptic number.

90837841858 is a deficient number, since it is larger than the sum of its proper divisors (45418920932).

90837841858 is a wasteful number, since it uses less digits than its factorization.

90837841858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45418920931.

The product of its (nonzero) digits is 15482880, while the sum is 61.

The spelling of 90837841858 in words is "ninety billion, eight hundred thirty-seven million, eight hundred forty-one thousand, eight hundred fifty-eight".