161456495 has 4 divisors (see below), whose sum is σ = 193747800. Its totient is φ = 129165192.

The previous prime is 161456467. The next prime is 161456501. The reversal of 161456495 is 594654161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 594654161 = 20047 ⋅29663.

It is a cyclic number.

It is not a de Polignac number, because 161456495 - 2¹⁸ = 161194351 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 16145645 + ... + 16145654.

It is an arithmetic number, because the mean of its divisors is an integer number (48436950).

Almost surely, 2^161456495 is an apocalyptic number.

161456495 is a deficient number, since it is larger than the sum of its proper divisors (32291305).

161456495 is an equidigital number, since it uses as much as digits as its factorization.

161456495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32291304.

The product of its digits is 129600, while the sum is 41.

The square root of 161456495 is about 12706.5532305185. The cubic root of 161456495 is about 544.5258564529.

The spelling of 161456495 in words is "one hundred sixty-one million, four hundred fifty-six thousand, four hundred ninety-five".