161803803 has 8 divisors (see below), whose sum is σ = 246558208. Its totient is φ = 92459304.

The previous prime is 161803799. The next prime is 161803819. The reversal of 161803803 is 308308161.

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

It is not a de Polignac number, because 161803803 - 2² = 161803799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161803823) 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, 3852451 + ... + 3852492.

It is an arithmetic number, because the mean of its divisors is an integer number (30819776).

Almost surely, 2^161803803 is an apocalyptic number.

161803803 is a deficient number, since it is larger than the sum of its proper divisors (84754405).

161803803 is an equidigital number, since it uses as much as digits as its factorization.

161803803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7704953.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 161803803 is about 12720.2123803025. The cubic root of 161803803 is about 544.9160188191.

The spelling of 161803803 in words is "one hundred sixty-one million, eight hundred three thousand, eight hundred three".