161041788 has 18 divisors (see below), whose sum is σ = 407077944. Its totient is φ = 53680584.

The previous prime is 161041781. The next prime is 161041813. The reversal of 161041788 is 887140161.

161041788 is a `hidden beast` number, since 161 + 0 + 417 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4473383 = 161041788 / (1 + 6 + 1 + 0 + 4 + 1 + 7 + 8 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161041781) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2236656 + ... + 2236727.

Almost surely, 2^161041788 is an apocalyptic number.

161041788 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

161041788 is an abundant number, since it is smaller than the sum of its proper divisors (246036156).

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

161041788 is a wasteful number, since it uses less digits than its factorization.

161041788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4473393 (or 4473388 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 161041788 is about 12690.2241114962. The cubic root of 161041788 is about 544.0592450975.

The spelling of 161041788 in words is "one hundred sixty-one million, forty-one thousand, seven hundred eighty-eight".