165499894 has 16 divisors (see below), whose sum is σ = 284633856. Its totient is φ = 70698600.

The previous prime is 165499889. The next prime is 165499907. The reversal of 165499894 is 498994561.

It is a super-2 number, since 2×165499894² = 54780429828022472, which contains 22 as substring.

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, 14652 + ... + 23359.

It is an arithmetic number, because the mean of its divisors is an integer number (17789616).

Almost surely, 2^165499894 is an apocalyptic number.

165499894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

165499894 is a deficient number, since it is larger than the sum of its proper divisors (119133962).

165499894 is a wasteful number, since it uses less digits than its factorization.

165499894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38331.

The product of its digits is 2799360, while the sum is 55.

The square root of 165499894 is about 12864.6762104610. The cubic root of 165499894 is about 549.0340002146.

The spelling of 165499894 in words is "one hundred sixty-five million, four hundred ninety-nine thousand, eight hundred ninety-four".