161814396 has 48 divisors (see below), whose sum is σ = 384894720. Its totient is φ = 52899840.

The previous prime is 161814391. The next prime is 161814437. The reversal of 161814396 is 693418161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161814391) 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, 218595 + ... + 219333.

It is an arithmetic number, because the mean of its divisors is an integer number (8018640).

Almost surely, 2^161814396 is an apocalyptic number.

It is an amenable number.

161814396 is an abundant number, since it is smaller than the sum of its proper divisors (223080324).

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

161814396 is a wasteful number, since it uses less digits than its factorization.

161814396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074 (or 1072 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 161814396 is about 12720.6287580449. The cubic root of 161814396 is about 544.9279101123.

The spelling of 161814396 in words is "one hundred sixty-one million, eight hundred fourteen thousand, three hundred ninety-six".