18099137 has 16 divisors (see below), whose sum is σ = 21872640. Its totient is φ = 14640912.

The previous prime is 18099131. The next prime is 18099143. The reversal of 18099137 is 73199081.

It is an interprime number because it is at equal distance from previous prime (18099131) and next prime (18099143).

It is not a de Polignac number, because 18099137 - 2¹⁶ = 18033601 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a pancake number, because a pancake can be divided into 18099137 parts by 6016 straight cuts.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18099137.

It is not an unprimeable number, because it can be changed into a prime (18099131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12008 + ... + 13430.

It is an arithmetic number, because the mean of its divisors is an integer number (1367040).

Almost surely, 2^18099137 is an apocalyptic number.

It is an amenable number.

18099137 is a deficient number, since it is larger than the sum of its proper divisors (3773503).

18099137 is a wasteful number, since it uses less digits than its factorization.

18099137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 18099137 is about 4254.3080518458. The cubic root of 18099137 is about 262.5543929612.

The spelling of 18099137 in words is "eighteen million, ninety-nine thousand, one hundred thirty-seven".