165087387 has 6 divisors (see below), whose sum is σ = 238459572. Its totient is φ = 110058252.

The previous prime is 165087347. The next prime is 165087389. The reversal of 165087387 is 783780561.

165087387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165087387 - 2⁷ = 165087259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165087389) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9171513 + ... + 9171530.

It is an arithmetic number, because the mean of its divisors is an integer number (39743262).

Almost surely, 2^165087387 is an apocalyptic number.

165087387 is a deficient number, since it is larger than the sum of its proper divisors (73372185).

165087387 is a wasteful number, since it uses less digits than its factorization.

165087387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18343049 (or 18343046 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 165087387 is about 12848.6336627674. The cubic root of 165087387 is about 548.5774665967.

The spelling of 165087387 in words is "one hundred sixty-five million, eighty-seven thousand, three hundred eighty-seven".