161233458 has 16 divisors (see below), whose sum is σ = 322671360. Its totient is φ = 53710416.

The previous prime is 161233447. The next prime is 161233469. The reversal of 161233458 is 854332161.

It is an interprime number because it is at equal distance from previous prime (161233447) and next prime (161233469).

It is an unprimeable number.

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, 2916 + ... + 18192.

It is an arithmetic number, because the mean of its divisors is an integer number (20166960).

Almost surely, 2^161233458 is an apocalyptic number.

161233458 is an abundant number, since it is smaller than the sum of its proper divisors (161437902).

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

161233458 is a wasteful number, since it uses less digits than its factorization.

161233458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17041.

The product of its digits is 17280, while the sum is 33.

The square root of 161233458 is about 12697.7737418809. The cubic root of 161233458 is about 544.2750037799.

The spelling of 161233458 in words is "one hundred sixty-one million, two hundred thirty-three thousand, four hundred fifty-eight".