18106491535 has 32 divisors (see below), whose sum is σ = 23972143104. Its totient is φ = 13019712000.

The previous prime is 18106491523. The next prime is 18106491539. The reversal of 18106491535 is 53519460181.

It is not a de Polignac number, because 18106491535 - 2⁹ = 18106491023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18106491491 and 18106491500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18106491539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1749175 + ... + 1759495.

It is an arithmetic number, because the mean of its divisors is an integer number (749129472).

Almost surely, 2^18106491535 is an apocalyptic number.

18106491535 is a deficient number, since it is larger than the sum of its proper divisors (5865651569).

18106491535 is a wasteful number, since it uses less digits than its factorization.

18106491535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10695.

The product of its (nonzero) digits is 129600, while the sum is 43.

The spelling of 18106491535 in words is "eighteen billion, one hundred six million, four hundred ninety-one thousand, five hundred thirty-five".