161320610 has 16 divisors (see below), whose sum is σ = 316775232. Its totient is φ = 58662000.

The previous prime is 161320567. The next prime is 161320613. The reversal of 161320610 is 16023161.

161320610 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (161320613) 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, 733166 + ... + 733385.

It is an arithmetic number, because the mean of its divisors is an integer number (19798452).

Almost surely, 2^161320610 is an apocalyptic number.

161320610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161320610 is a deficient number, since it is larger than the sum of its proper divisors (155454622).

161320610 is a wasteful number, since it uses less digits than its factorization.

161320610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466569.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 161320610 is about 12701.2050609381. The cubic root of 161320610 is about 544.3730523107.

Adding to 161320610 its reverse (16023161), we get a palindrome (177343771).

The spelling of 161320610 in words is "one hundred sixty-one million, three hundred twenty thousand, six hundred ten".