1350845891 has 4 divisors (see below), whose sum is σ = 1430307432. Its totient is φ = 1271384352.

The previous prime is 1350845879. The next prime is 1350845911. The reversal of 1350845891 is 1985480531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1985480531 = 251 ⋅7910281.

It is a cyclic number.

It is not a de Polignac number, because 1350845891 - 2¹⁴ = 1350829507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1350845861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39730745 + ... + 39730778.

It is an arithmetic number, because the mean of its divisors is an integer number (357576858).

Almost surely, 2^1350845891 is an apocalyptic number.

1350845891 is a deficient number, since it is larger than the sum of its proper divisors (79461541).

1350845891 is an equidigital number, since it uses as much as digits as its factorization.

1350845891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79461540.

The product of its (nonzero) digits is 172800, while the sum is 44.

The square root of 1350845891 is about 36753.8554576251. The cubic root of 1350845891 is about 1105.4402376248.

The spelling of 1350845891 in words is "one billion, three hundred fifty million, eight hundred forty-five thousand, eight hundred ninety-one".