165099998 has 16 divisors (see below), whose sum is σ = 283683840. Its totient is φ = 70593336.

The previous prime is 165099983. The next prime is 165100009. The reversal of 165099998 is 899990561.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7286 + ... + 19577.

It is an arithmetic number, because the mean of its divisors is an integer number (17730240).

Almost surely, 2^165099998 is an apocalyptic number.

165099998 is a deficient number, since it is larger than the sum of its proper divisors (118583842).

165099998 is a wasteful number, since it uses less digits than its factorization.

165099998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27311.

The product of its (nonzero) digits is 1574640, while the sum is 56.

The square root of 165099998 is about 12849.1244059663. The cubic root of 165099998 is about 548.5914348237.

The spelling of 165099998 in words is "one hundred sixty-five million, ninety-nine thousand, nine hundred ninety-eight".