161457119 has 4 divisors (see below), whose sum is σ = 163500960. Its totient is φ = 159413280.

The previous prime is 161457113. The next prime is 161457169. The reversal of 161457119 is 911754161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 911754161 = 821 ⋅1110541.

It is a cyclic number.

It is not a de Polignac number, because 161457119 - 2²⁰ = 160408543 is a prime.

It is a super-2 number, since 2×161457119² = 52136802551560322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161457113) 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 3 ways as a sum of consecutive naturals, for example, 1021802 + ... + 1021959.

It is an arithmetic number, because the mean of its divisors is an integer number (40875240).

Almost surely, 2^161457119 is an apocalyptic number.

161457119 is a deficient number, since it is larger than the sum of its proper divisors (2043841).

161457119 is an equidigital number, since it uses as much as digits as its factorization.

161457119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043840.

The product of its digits is 7560, while the sum is 35.

The square root of 161457119 is about 12706.5777847538. The cubic root of 161457119 is about 544.5265579499.

The spelling of 161457119 in words is "one hundred sixty-one million, four hundred fifty-seven thousand, one hundred nineteen".