161147403 has 24 divisors (see below), whose sum is σ = 254966400. Its totient is φ = 97622784.

The previous prime is 161147387. The next prime is 161147429. The reversal of 161147403 is 304741161.

It is a happy number.

161147403 is a `hidden beast` number, since 1 + 611 + 4 + 7 + 40 + 3 = 666.

161147403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161147403 - 2⁴ = 161147387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161147003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13723 + ... + 22596.

It is an arithmetic number, because the mean of its divisors is an integer number (10623600).

Almost surely, 2^161147403 is an apocalyptic number.

161147403 is a deficient number, since it is larger than the sum of its proper divisors (93818997).

161147403 is a wasteful number, since it uses less digits than its factorization.

161147403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36371 (or 36368 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 161147403 is about 12694.3847034821. The cubic root of 161147403 is about 544.1781547318.

Adding to 161147403 its reverse (304741161), we get a palindrome (465888564).

The spelling of 161147403 in words is "one hundred sixty-one million, one hundred forty-seven thousand, four hundred three".