161536827 has 4 divisors (see below), whose sum is σ = 215382440. Its totient is φ = 107691216.

The previous prime is 161536813. The next prime is 161536861. The reversal of 161536827 is 728635161.

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

It is not a de Polignac number, because 161536827 - 2⁴ = 161536811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161536807) 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, 26922802 + ... + 26922807.

It is an arithmetic number, because the mean of its divisors is an integer number (53845610).

Almost surely, 2^161536827 is an apocalyptic number.

161536827 is a deficient number, since it is larger than the sum of its proper divisors (53845613).

161536827 is an equidigital number, since it uses as much as digits as its factorization.

161536827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53845612.

The product of its digits is 60480, while the sum is 39.

The square root of 161536827 is about 12709.7138834830. The cubic root of 161536827 is about 544.6161503293.

The spelling of 161536827 in words is "one hundred sixty-one million, five hundred thirty-six thousand, eight hundred twenty-seven".