161251414 has 4 divisors (see below), whose sum is σ = 241877124. Its totient is φ = 80625706.

The previous prime is 161251393. The next prime is 161251421. The reversal of 161251414 is 414152161.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40312852 + ... + 40312855.

It is an arithmetic number, because the mean of its divisors is an integer number (60469281).

Almost surely, 2^161251414 is an apocalyptic number.

161251414 is a deficient number, since it is larger than the sum of its proper divisors (80625710).

161251414 is an equidigital number, since it uses as much as digits as its factorization.

161251414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80625709.

The product of its digits is 960, while the sum is 25.

The square root of 161251414 is about 12698.4807752739. The cubic root of 161251414 is about 544.2952076907.

The spelling of 161251414 in words is "one hundred sixty-one million, two hundred fifty-one thousand, four hundred fourteen".