12161910 has 32 divisors (see below), whose sum is σ = 29743200. Its totient is φ = 3181568.

The previous prime is 12161899. The next prime is 12161911. The reversal of 12161910 is 1916121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12161911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2235 + ... + 5414.

It is an arithmetic number, because the mean of its divisors is an integer number (929475).

Almost surely, 2^12161910 is an apocalyptic number.

12161910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12161910 is an abundant number, since it is smaller than the sum of its proper divisors (17581290).

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

12161910 is a wasteful number, since it uses less digits than its factorization.

12161910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7712.

The product of its (nonzero) digits is 108, while the sum is 21.

The square root of 12161910 is about 3487.3930091115. The cubic root of 12161910 is about 229.9679224325.

The spelling of 12161910 in words is "twelve million, one hundred sixty-one thousand, nine hundred ten".