161663514 has 16 divisors (see below), whose sum is σ = 340344480. Its totient is φ = 51051600.

The previous prime is 161663501. The next prime is 161663539. The reversal of 161663514 is 415366161.

161663514 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×161663514³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 708937 + ... + 709164.

It is an arithmetic number, because the mean of its divisors is an integer number (21271530).

Almost surely, 2^161663514 is an apocalyptic number.

161663514 is an abundant number, since it is smaller than the sum of its proper divisors (178680966).

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

161663514 is a wasteful number, since it uses less digits than its factorization.

161663514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418125.

The product of its digits is 12960, while the sum is 33.

The square root of 161663514 is about 12714.6967718464. The cubic root of 161663514 is about 544.7584868241.

The spelling of 161663514 in words is "one hundred sixty-one million, six hundred sixty-three thousand, five hundred fourteen".