161469388 has 12 divisors (see below), whose sum is σ = 283616032. Its totient is φ = 80436240.

The previous prime is 161469367. The next prime is 161469389. The reversal of 161469388 is 883964161.

It is a super-2 number, since 2×161469388² = 52144726522189088, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (161469389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73395 + ... + 75562.

Almost surely, 2^161469388 is an apocalyptic number.

It is an amenable number.

161469388 is a deficient number, since it is larger than the sum of its proper divisors (122146644).

161469388 is a wasteful number, since it uses less digits than its factorization.

161469388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149232 (or 149230 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The square root of 161469388 is about 12707.0605570289. The cubic root of 161469388 is about 544.5403503160.

The spelling of 161469388 in words is "one hundred sixty-one million, four hundred sixty-nine thousand, three hundred eighty-eight".