161214636 has 48 divisors (see below), whose sum is σ = 428214528. Its totient is φ = 46728000.

The previous prime is 161214623. The next prime is 161214649. The reversal of 161214636 is 636412161.

It is an interprime number because it is at equal distance from previous prime (161214623) and next prime (161214649).

It is a super-2 number, since 2×161214636² = 51980317721224992, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23515 + ... + 29586.

It is an arithmetic number, because the mean of its divisors is an integer number (8921136).

Almost surely, 2^161214636 is an apocalyptic number.

It is an amenable number.

161214636 is an abundant number, since it is smaller than the sum of its proper divisors (266999892).

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

161214636 is a wasteful number, since it uses less digits than its factorization.

161214636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53142 (or 53140 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 161214636 is about 12697.0325667063. The cubic root of 161214636 is about 544.2538238443.

Adding to 161214636 its reverse (636412161), we get a palindrome (797626797).

The spelling of 161214636 in words is "one hundred sixty-one million, two hundred fourteen thousand, six hundred thirty-six".