1354695891 has 4 divisors (see below), whose sum is σ = 1806261192. Its totient is φ = 903130592.

The previous prime is 1354695887. The next prime is 1354695893. The reversal of 1354695891 is 1985964531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1354695891 - 2² = 1354695887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1354695893) 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, 225782646 + ... + 225782651.

It is an arithmetic number, because the mean of its divisors is an integer number (451565298).

Almost surely, 2^1354695891 is an apocalyptic number.

1354695891 is a deficient number, since it is larger than the sum of its proper divisors (451565301).

1354695891 is an equidigital number, since it uses as much as digits as its factorization.

1354695891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451565300.

The product of its digits is 1166400, while the sum is 51.

The square root of 1354695891 is about 36806.1936499823. The cubic root of 1354695891 is about 1106.4894340558.

The spelling of 1354695891 in words is "one billion, three hundred fifty-four million, six hundred ninety-five thousand, eight hundred ninety-one".