1140040019 has 4 divisors (see below), whose sum is σ = 1140198360. Its totient is φ = 1139881680.

The previous prime is 1140039997. The next prime is 1140040049. The reversal of 1140040019 is 9100400411.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140040019 is a prime.

It is a super-2 number, since 2×1140040019² = 2599382489843040722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140040049) 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, 67829 + ... + 82950.

It is an arithmetic number, because the mean of its divisors is an integer number (285049590).

Almost surely, 2^1140040019 is an apocalyptic number.

1140040019 is a deficient number, since it is larger than the sum of its proper divisors (158341).

1140040019 is an equidigital number, since it uses as much as digits as its factorization.

1140040019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158340.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1140040019 is about 33764.4786573109. The cubic root of 1140040019 is about 1044.6561505405.

The spelling of 1140040019 in words is "one billion, one hundred forty million, forty thousand, nineteen".