161924434 has 16 divisors (see below), whose sum is σ = 282823488. Its totient is φ = 68086512.

The previous prime is 161924431. The next prime is 161924443. The reversal of 161924434 is 434429161.

161924434 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 161924434.

It is not an unprimeable number, because it can be changed into a prime (161924431) by changing a digit.

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, 108372 + ... + 109855.

It is an arithmetic number, because the mean of its divisors is an integer number (17676468).

Almost surely, 2^161924434 is an apocalyptic number.

161924434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

161924434 is a deficient number, since it is larger than the sum of its proper divisors (120899054).

161924434 is a wasteful number, since it uses less digits than its factorization.

161924434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218289.

The product of its digits is 20736, while the sum is 34.

The square root of 161924434 is about 12724.9532022715. The cubic root of 161924434 is about 545.0514038432.

The spelling of 161924434 in words is "one hundred sixty-one million, nine hundred twenty-four thousand, four hundred thirty-four".