161337869 has 16 divisors (see below), whose sum is σ = 203231616. Its totient is φ = 124416000.

The previous prime is 161337859. The next prime is 161337899. The reversal of 161337869 is 968733161.

161337869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 161337869 - 2⁴ = 161337853 is a prime.

It is a super-2 number, since 2×161337869² = 52059815946922322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161337859) 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, 3332 + ... + 18269.

It is an arithmetic number, because the mean of its divisors is an integer number (12701976).

Almost surely, 2^161337869 is an apocalyptic number.

It is an amenable number.

161337869 is a deficient number, since it is larger than the sum of its proper divisors (41893747).

161337869 is a wasteful number, since it uses less digits than its factorization.

161337869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21716.

The product of its digits is 163296, while the sum is 44.

The square root of 161337869 is about 12701.8844664876. The cubic root of 161337869 is about 544.3924649976.

The spelling of 161337869 in words is "one hundred sixty-one million, three hundred thirty-seven thousand, eight hundred sixty-nine".