161245929 has 16 divisors (see below), whose sum is σ = 232164800. Its totient is φ = 98957376.

The previous prime is 161245871. The next prime is 161245937. The reversal of 161245929 is 929542161.

It is not a de Polignac number, because 161245929 - 2⁹ = 161245417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161245729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9327 + ... + 20235.

It is an arithmetic number, because the mean of its divisors is an integer number (14510300).

Almost surely, 2^161245929 is an apocalyptic number.

It is an amenable number.

161245929 is a deficient number, since it is larger than the sum of its proper divisors (70918871).

161245929 is a wasteful number, since it uses less digits than its factorization.

161245929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11304.

The product of its digits is 38880, while the sum is 39.

The square root of 161245929 is about 12698.2648027201. The cubic root of 161245929 is about 544.2890361829.

The spelling of 161245929 in words is "one hundred sixty-one million, two hundred forty-five thousand, nine hundred twenty-nine".