161610610 has 16 divisors (see below), whose sum is σ = 332456256. Its totient is φ = 55409328.

The previous prime is 161610601. The next prime is 161610611. The reversal of 161610610 is 16016161.

It is a super-2 number, since 2×161610610² = 52235978529144200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161610611) 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, 1154292 + ... + 1154431.

It is an arithmetic number, because the mean of its divisors is an integer number (20778516).

Almost surely, 2^161610610 is an apocalyptic number.

161610610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161610610 is an abundant number, since it is smaller than the sum of its proper divisors (170845646).

161610610 is a wasteful number, since it uses less digits than its factorization.

161610610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308737.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 161610610 is about 12712.6161744937. The cubic root of 161610610 is about 544.6990567017.

Adding to 161610610 its reverse (16016161), we get a palindrome (177626771).

The spelling of 161610610 in words is "one hundred sixty-one million, six hundred ten thousand, six hundred ten".