161038583 has 4 divisors (see below), whose sum is σ = 166233408. Its totient is φ = 155843760.

The previous prime is 161038573. The next prime is 161038613. The reversal of 161038583 is 385830161.

161038583 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161038583 - 2⁶ = 161038519 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161038573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2597366 + ... + 2597427.

It is an arithmetic number, because the mean of its divisors is an integer number (41558352).

Almost surely, 2^161038583 is an apocalyptic number.

161038583 is a deficient number, since it is larger than the sum of its proper divisors (5194825).

161038583 is an equidigital number, since it uses as much as digits as its factorization.

161038583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5194824.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 161038583 is about 12690.0978325622. The cubic root of 161038583 is about 544.0556358449.

The spelling of 161038583 in words is "one hundred sixty-one million, thirty-eight thousand, five hundred eighty-three".