1440146091 has 16 divisors (see below), whose sum is σ = 1940889600. Its totient is φ = 949794048.

The previous prime is 1440146087. The next prime is 1440146093. The reversal of 1440146091 is 1906410441.

It is not a de Polignac number, because 1440146091 - 2² = 1440146087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1440146093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131515 + ... + 142043.

It is an arithmetic number, because the mean of its divisors is an integer number (121305600).

Almost surely, 2^1440146091 is an apocalyptic number.

1440146091 is a deficient number, since it is larger than the sum of its proper divisors (500743509).

1440146091 is a wasteful number, since it uses less digits than its factorization.

1440146091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11018.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1440146091 is about 37949.2567911415. The cubic root of 1440146091 is about 1129.2814213921.

The spelling of 1440146091 in words is "one billion, four hundred forty million, one hundred forty-six thousand, ninety-one".