161492345 has 8 divisors (see below), whose sum is σ = 221475264. Its totient is φ = 110737584.

The previous prime is 161492341. The next prime is 161492351. The reversal of 161492345 is 543294161.

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 161492345 - 2² = 161492341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 4614067 = 161492345 / (1 + 6 + 1 + 4 + 9 + 2 + 3 + 4 + 5).

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161492341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2306999 + ... + 2307068.

It is an arithmetic number, because the mean of its divisors is an integer number (27684408).

Almost surely, 2^161492345 is an apocalyptic number.

It is an amenable number.

161492345 is a deficient number, since it is larger than the sum of its proper divisors (59982919).

161492345 is an equidigital number, since it uses as much as digits as its factorization.

161492345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614079.

The product of its digits is 25920, while the sum is 35.

The square root of 161492345 is about 12707.9638416231. The cubic root of 161492345 is about 544.5661558688.

The spelling of 161492345 in words is "one hundred sixty-one million, four hundred ninety-two thousand, three hundred forty-five".