1354844891 has 2 divisors, whose sum is σ = 1354844892. Its totient is φ = 1354844890.

The previous prime is 1354844879. The next prime is 1354844893. The reversal of 1354844891 is 1984484531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1354844891 - 2²⁶ = 1287736027 is a prime.

Together with 1354844893, 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 (1354844893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677422445 + 677422446.

It is an arithmetic number, because the mean of its divisors is an integer number (677422446).

Almost surely, 2^1354844891 is an apocalyptic number.

1354844891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1354844891 is an equidigital number, since it uses as much as digits as its factorization.

1354844891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 552960, while the sum is 47.

The square root of 1354844891 is about 36808.2177101799. The cubic root of 1354844891 is about 1106.5299993425.

The spelling of 1354844891 in words is "one billion, three hundred fifty-four million, eight hundred forty-four thousand, eight hundred ninety-one".