161563314 has 48 divisors (see below), whose sum is σ = 357950880. Its totient is φ = 48576000.

The previous prime is 161563313. The next prime is 161563373. The reversal of 161563314 is 413365161.

It is a super-2 number, since 2×161563314² = 52205408861325192, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (161563313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100114 + ... + 101714.

It is an arithmetic number, because the mean of its divisors is an integer number (7457310).

Almost surely, 2^161563314 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161563314, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178975440).

161563314 is an abundant number, since it is smaller than the sum of its proper divisors (196387566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161563314 is a wasteful number, since it uses less digits than its factorization.

161563314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767 (or 1756 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 161563314 is about 12710.7558390522. The cubic root of 161563314 is about 544.6459153885.

The spelling of 161563314 in words is "one hundred sixty-one million, five hundred sixty-three thousand, three hundred fourteen".