161080810 has 16 divisors (see below), whose sum is σ = 316304352. Its totient is φ = 58574800.

The previous prime is 161080781. The next prime is 161080811. The reversal of 161080810 is 18080161.

It is a happy number.

It is a super-2 number, since 2×161080810² = 51894054700512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161080811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732076 + ... + 732295.

It is an arithmetic number, because the mean of its divisors is an integer number (19769022).

Almost surely, 2^161080810 is an apocalyptic number.

161080810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161080810 is a deficient number, since it is larger than the sum of its proper divisors (155223542).

161080810 is a wasteful number, since it uses less digits than its factorization.

161080810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464389.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 161080810 is about 12691.7615010683. The cubic root of 161080810 is about 544.1031851737.

The spelling of 161080810 in words is "one hundred sixty-one million, eighty thousand, eight hundred ten".