1334453891 has 2 divisors, whose sum is σ = 1334453892. Its totient is φ = 1334453890.

The previous prime is 1334453749. The next prime is 1334453909. The reversal of 1334453891 is 1983544331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1334453891 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1334450891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 667226945 + 667226946.

It is an arithmetic number, because the mean of its divisors is an integer number (667226946).

Almost surely, 2^1334453891 is an apocalyptic number.

1334453891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1334453891 is an equidigital number, since it uses as much as digits as its factorization.

1334453891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 1334453891 is about 36530.1778123239. The cubic root of 1334453891 is about 1100.9506632867.

The spelling of 1334453891 in words is "one billion, three hundred thirty-four million, four hundred fifty-three thousand, eight hundred ninety-one".