165413994 has 8 divisors (see below), whose sum is σ = 330828000. Its totient is φ = 55137996.

The previous prime is 165413987. The next prime is 165414017. The reversal of 165413994 is 499314561.

It is a sphenic number, since it is the product of 3 distinct primes.

165413994 is an admirable number.

It is a super-2 number, since 2×165413994² = 54723578822064072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13784494 + ... + 13784505.

It is an arithmetic number, because the mean of its divisors is an integer number (41353500).

Almost surely, 2^165413994 is an apocalyptic number.

165413994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165413994 is a wasteful number, since it uses less digits than its factorization.

165413994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27569004.

The product of its digits is 116640, while the sum is 42.

The square root of 165413994 is about 12861.3371777588. The cubic root of 165413994 is about 548.9389947508.

The spelling of 165413994 in words is "one hundred sixty-five million, four hundred thirteen thousand, nine hundred ninety-four".