1468943891 has 2 divisors, whose sum is σ = 1468943892. Its totient is φ = 1468943890.

The previous prime is 1468943869. The next prime is 1468943893. The reversal of 1468943891 is 1983498641.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1468943891 - 2¹⁴ = 1468927507 is a prime.

It is a Sophie Germain prime.

Together with 1468943893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1468943893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 734471945 + 734471946.

It is an arithmetic number, because the mean of its divisors is an integer number (734471946).

Almost surely, 2^1468943891 is an apocalyptic number.

1468943891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1468943891 is an equidigital number, since it uses as much as digits as its factorization.

1468943891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 53.

The square root of 1468943891 is about 38326.8038192594. The cubic root of 1468943891 is about 1136.7590030662.

The spelling of 1468943891 in words is "one billion, four hundred sixty-eight million, nine hundred forty-three thousand, eight hundred ninety-one".