161363003 has 4 divisors (see below), whose sum is σ = 165298728. Its totient is φ = 157427280.

The previous prime is 161362987. The next prime is 161363017. The reversal of 161363003 is 300363161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161363003 - 2⁴ = 161362987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161363003.

It is not an unprimeable number, because it can be changed into a prime (161363063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1967801 + ... + 1967882.

It is an arithmetic number, because the mean of its divisors is an integer number (41324682).

Almost surely, 2^161363003 is an apocalyptic number.

161363003 is a deficient number, since it is larger than the sum of its proper divisors (3935725).

161363003 is an equidigital number, since it uses as much as digits as its factorization.

161363003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3935724.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 161363003 is about 12702.8738087096. The cubic root of 161363003 is about 544.4207329007.

The spelling of 161363003 in words is "one hundred sixty-one million, three hundred sixty-three thousand, three".