18535089 has 16 divisors (see below), whose sum is σ = 26913600. Its totient is φ = 11301696.

The previous prime is 18535087. The next prime is 18535103. The reversal of 18535089 is 98053581.

It is not a de Polignac number, because 18535089 - 2¹ = 18535087 is a prime.

It is a Curzon number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (18535087) 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, 3954 + ... + 7259.

It is an arithmetic number, because the mean of its divisors is an integer number (1682100).

Almost surely, 2^18535089 is an apocalyptic number.

18535089 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

18535089 is a deficient number, since it is larger than the sum of its proper divisors (8378511).

18535089 is a wasteful number, since it uses less digits than its factorization.

18535089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11264.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 18535089 is about 4305.2397145804. The cubic root of 18535089 is about 264.6457304686.

The spelling of 18535089 in words is "eighteen million, five hundred thirty-five thousand, eighty-nine".