161599038 has 16 divisors (see below), whose sum is σ = 323901696. Its totient is φ = 53749080.

The previous prime is 161599033. The next prime is 161599043. The reversal of 161599038 is 830995161.

It is an interprime number because it is at equal distance from previous prime (161599033) and next prime (161599043).

It is a super-2 number, since 2×161599038² = 52228498165050888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161599033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26308 + ... + 31863.

It is an arithmetic number, because the mean of its divisors is an integer number (20243856).

Almost surely, 2^161599038 is an apocalyptic number.

161599038 is an abundant number, since it is smaller than the sum of its proper divisors (162302658).

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

161599038 is a wasteful number, since it uses less digits than its factorization.

161599038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58639.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 161599038 is about 12712.1610279291. The cubic root of 161599038 is about 544.6860554762.

The spelling of 161599038 in words is "one hundred sixty-one million, five hundred ninety-nine thousand, thirty-eight".