18099037 has 4 divisors (see below), whose sum is σ = 19744416. Its totient is φ = 16453660.

The previous prime is 18099013. The next prime is 18099041. The reversal of 18099037 is 73099081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18099037 - 2⁷ = 18098909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18098987 and 18099005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18099007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822673 + ... + 822694.

It is an arithmetic number, because the mean of its divisors is an integer number (4936104).

Almost surely, 2^18099037 is an apocalyptic number.

It is an amenable number.

18099037 is a deficient number, since it is larger than the sum of its proper divisors (1645379).

18099037 is a wasteful number, since it uses less digits than its factorization.

18099037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645378.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 18099037 is about 4254.2962990370. The cubic root of 18099037 is about 262.5539094117.

The spelling of 18099037 in words is "eighteen million, ninety-nine thousand, thirty-seven".