1468813391 has 4 divisors (see below), whose sum is σ = 1478540784. Its totient is φ = 1459086000.

The previous prime is 1468813351. The next prime is 1468813399. The reversal of 1468813391 is 1933188641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1933188641 = 38923 ⋅49667.

It is a cyclic number.

It is not a de Polignac number, because 1468813391 - 2¹⁴ = 1468797007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1468813399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4863470 + ... + 4863771.

It is an arithmetic number, because the mean of its divisors is an integer number (369635196).

Almost surely, 2^1468813391 is an apocalyptic number.

1468813391 is a deficient number, since it is larger than the sum of its proper divisors (9727393).

1468813391 is an equidigital number, since it uses as much as digits as its factorization.

1468813391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9727392.

The product of its digits is 124416, while the sum is 44.

The square root of 1468813391 is about 38325.1013175438. The cubic root of 1468813391 is about 1136.7253390976.

The spelling of 1468813391 in words is "one billion, four hundred sixty-eight million, eight hundred thirteen thousand, three hundred ninety-one".