161243610 has 32 divisors (see below), whose sum is σ = 422165952. Its totient is φ = 39089280.

The previous prime is 161243603. The next prime is 161243629. The reversal of 161243610 is 16342161.

161243610 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243979 + ... + 244638.

It is an arithmetic number, because the mean of its divisors is an integer number (13192686).

Almost surely, 2^161243610 is an apocalyptic number.

161243610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161243610 is an abundant number, since it is smaller than the sum of its proper divisors (260922342).

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

161243610 is a wasteful number, since it uses less digits than its factorization.

161243610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488638.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 161243610 is about 12698.1734907033. The cubic root of 161243610 is about 544.2864268926.

Adding to 161243610 its reverse (16342161), we get a palindrome (177585771).

The spelling of 161243610 in words is "one hundred sixty-one million, two hundred forty-three thousand, six hundred ten".