161499129 has 8 divisors (see below), whose sum is σ = 234907872. Its totient is φ = 97878240.

The previous prime is 161499127. The next prime is 161499131. The reversal of 161499129 is 921994161.

It is a happy number.

161499129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161499127) and next prime (161499131).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161499129 - 2¹ = 161499127 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (161499127) 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, 2446924 + ... + 2446989.

It is an arithmetic number, because the mean of its divisors is an integer number (29363484).

Almost surely, 2^161499129 is an apocalyptic number.

It is an amenable number.

161499129 is a deficient number, since it is larger than the sum of its proper divisors (73408743).

161499129 is a wasteful number, since it uses less digits than its factorization.

161499129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4893927.

The product of its digits is 34992, while the sum is 42.

The square root of 161499129 is about 12708.2307580560. The cubic root of 161499129 is about 544.5737811736.

The spelling of 161499129 in words is "one hundred sixty-one million, four hundred ninety-nine thousand, one hundred twenty-nine".