18087035537 has 2 divisors, whose sum is σ = 18087035538. Its totient is φ = 18087035536.

The previous prime is 18087035531. The next prime is 18087035599. The reversal of 18087035537 is 73553078081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12401272321 + 5685763216 = 111361^2 + 75404^2 .

It is a cyclic number.

It is not a de Polignac number, because 18087035537 - 2²² = 18082841233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18087035491 and 18087035500.

It is not a weakly prime, because it can be changed into another prime (18087035531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9043517768 + 9043517769.

It is an arithmetic number, because the mean of its divisors is an integer number (9043517769).

Almost surely, 2^18087035537 is an apocalyptic number.

It is an amenable number.

18087035537 is a deficient number, since it is larger than the sum of its proper divisors (1).

18087035537 is an equidigital number, since it uses as much as digits as its factorization.

18087035537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 18087035537 in words is "eighteen billion, eighty-seven million, thirty-five thousand, five hundred thirty-seven".