1368112181 has 16 divisors (see below), whose sum is σ = 1427251200. Its totient is φ = 1309996800.

The previous prime is 1368112177. The next prime is 1368112219. The reversal of 1368112181 is 1812118631.

It is a cyclic number.

It is not a de Polignac number, because 1368112181 - 2² = 1368112177 is a prime.

It is a super-2 number, since 2×1368112181² = 3743461879601153522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368112121) 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, 1355405 + ... + 1356413.

It is an arithmetic number, because the mean of its divisors is an integer number (89203200).

Almost surely, 2^1368112181 is an apocalyptic number.

It is an amenable number.

1368112181 is a deficient number, since it is larger than the sum of its proper divisors (59139019).

1368112181 is a wasteful number, since it uses less digits than its factorization.

1368112181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460.

The product of its digits is 2304, while the sum is 32.

The square root of 1368112181 is about 36988.0005001622. Note that the first 3 decimals coincide. The cubic root of 1368112181 is about 1110.1301638338.

The spelling of 1368112181 in words is "one billion, three hundred sixty-eight million, one hundred twelve thousand, one hundred eighty-one".