161415163 has 48 divisors (see below), whose sum is σ = 212357376. Its totient is φ = 121504320.

The previous prime is 161415113. The next prime is 161415167. The reversal of 161415163 is 361514161.

It is not a de Polignac number, because 161415163 - 2²¹ = 159318011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161415167) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1944720 + ... + 1944802.

It is an arithmetic number, because the mean of its divisors is an integer number (4424112).

Almost surely, 2^161415163 is an apocalyptic number.

161415163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

161415163 is a deficient number, since it is larger than the sum of its proper divisors (50942213).

161415163 is a wasteful number, since it uses less digits than its factorization.

161415163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 217 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 161415163 is about 12704.9267215518. The cubic root of 161415163 is about 544.4793872509.

The spelling of 161415163 in words is "one hundred sixty-one million, four hundred fifteen thousand, one hundred sixty-three".