161410681 has 12 divisors (see below), whose sum is σ = 172437552. Its totient is φ = 151044984.

The previous prime is 161410663. The next prime is 161410693. The reversal of 161410681 is 186014161.

It is not a de Polignac number, because 161410681 - 2¹¹ = 161408633 is a prime.

It is a super-2 number, since 2×161410681² = 52106815881767522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161410621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27270 + ... + 32656.

It is an arithmetic number, because the mean of its divisors is an integer number (14369796).

Almost surely, 2^161410681 is an apocalyptic number.

It is an amenable number.

161410681 is a deficient number, since it is larger than the sum of its proper divisors (11026871).

161410681 is an equidigital number, since it uses as much as digits as its factorization.

161410681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5508 (or 5489 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 161410681 is about 12704.7503320608. The cubic root of 161410681 is about 544.4743477012.

The spelling of 161410681 in words is "one hundred sixty-one million, four hundred ten thousand, six hundred eighty-one".