161244854 has 16 divisors (see below), whose sum is σ = 244127520. Its totient is φ = 79872960.

The previous prime is 161244829. The next prime is 161244859. The reversal of 161244854 is 458442161.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161244859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105959 + ... + 107469.

It is an arithmetic number, because the mean of its divisors is an integer number (15257970).

Almost surely, 2^161244854 is an apocalyptic number.

161244854 is a deficient number, since it is larger than the sum of its proper divisors (82882666).

161244854 is a wasteful number, since it uses less digits than its factorization.

161244854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1975.

The product of its digits is 30720, while the sum is 35.

The square root of 161244854 is about 12698.2224740316. Note that the first 3 decimals coincide. The cubic root of 161244854 is about 544.2878266185.

The spelling of 161244854 in words is "one hundred sixty-one million, two hundred forty-four thousand, eight hundred fifty-four".