161380799 has 8 divisors (see below), whose sum is σ = 163972512. Its totient is φ = 158798080.

The previous prime is 161380781. The next prime is 161380859. The reversal of 161380799 is 997083161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161380799 - 2²⁰ = 160332223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161380759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40187 + ... + 44019.

It is an arithmetic number, because the mean of its divisors is an integer number (20496564).

Almost surely, 2^161380799 is an apocalyptic number.

161380799 is a deficient number, since it is larger than the sum of its proper divisors (2591713).

161380799 is an equidigital number, since it uses as much as digits as its factorization.

161380799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4497.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 161380799 is about 12703.5742608134. The cubic root of 161380799 is about 544.4407460699.

The spelling of 161380799 in words is "one hundred sixty-one million, three hundred eighty thousand, seven hundred ninety-nine".