1014091891 has 4 divisors (see below), whose sum is σ = 1014201000. Its totient is φ = 1013982784.

The previous prime is 1014091889. The next prime is 1014091937. The reversal of 1014091891 is 1981904101.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1014091891 - 2¹ = 1014091889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1014091391) 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, 39166 + ... + 59683.

It is an arithmetic number, because the mean of its divisors is an integer number (253550250).

Almost surely, 2^1014091891 is an apocalyptic number.

1014091891 is a deficient number, since it is larger than the sum of its proper divisors (109109).

1014091891 is an equidigital number, since it uses as much as digits as its factorization.

1014091891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109108.

The product of its (nonzero) digits is 2592, while the sum is 34.

The square root of 1014091891 is about 31844.8094828655. The cubic root of 1014091891 is about 1004.6754035346.

Adding to 1014091891 its reverse (1981904101), we get a palindrome (2995995992).

The spelling of 1014091891 in words is "one billion, fourteen million, ninety-one thousand, eight hundred ninety-one".