162009859 has 16 divisors (see below), whose sum is σ = 180105984. Its totient is φ = 144496800.

The previous prime is 162009763. The next prime is 162009889. The reversal of 162009859 is 958900261.

It is a cyclic number.

It is not a de Polignac number, because 162009859 - 2¹³ = 162001667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (162009889) 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, 220657 + ... + 221389.

It is an arithmetic number, because the mean of its divisors is an integer number (11256624).

Almost surely, 2^162009859 is an apocalyptic number.

162009859 is a deficient number, since it is larger than the sum of its proper divisors (18096125).

162009859 is a wasteful number, since it uses less digits than its factorization.

162009859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 162009859 is about 12728.3093535630. The cubic root of 162009859 is about 545.1472362623.

The spelling of 162009859 in words is "one hundred sixty-two million, nine thousand, eight hundred fifty-nine".