1311861468 has 24 divisors (see below), whose sum is σ = 3070102672. Its totient is φ = 435988224.

The previous prime is 1311861451. The next prime is 1311861527. The reversal of 1311861468 is 8641681131.

1311861468 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1311861468² = 3441961022446230048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158155 + ... + 166242.

Almost surely, 2^1311861468 is an apocalyptic number.

It is an amenable number.

1311861468 is an abundant number, since it is smaller than the sum of its proper divisors (1758241204).

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

1311861468 is a wasteful number, since it uses less digits than its factorization.

1311861468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324741 (or 324739 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 1311861468 is about 36219.6282145469. The cubic root of 1311861468 is about 1094.7022029573.

The spelling of 1311861468 in words is "one billion, three hundred eleven million, eight hundred sixty-one thousand, four hundred sixty-eight".