161463503 has 8 divisors (see below), whose sum is σ = 167378400. Its totient is φ = 155571808.

The previous prime is 161463499. The next prime is 161463529. The reversal of 161463503 is 305364161.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 161463503 - 2² = 161463499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161462503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9053 + ... + 20121.

It is an arithmetic number, because the mean of its divisors is an integer number (20922300).

Almost surely, 2^161463503 is an apocalyptic number.

161463503 is a deficient number, since it is larger than the sum of its proper divisors (5914897).

161463503 is a wasteful number, since it uses less digits than its factorization.

161463503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11601.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 161463503 is about 12706.8289907435. The cubic root of 161463503 is about 544.5337346990.

The spelling of 161463503 in words is "one hundred sixty-one million, four hundred sixty-three thousand, five hundred three".