1140871638 has 8 divisors (see below), whose sum is σ = 2281743288. Its totient is φ = 380290544.

The previous prime is 1140871637. The next prime is 1140871639. The reversal of 1140871638 is 8361780411.

It is an interprime number because it is at equal distance from previous prime (1140871637) and next prime (1140871639).

It is a sphenic number, since it is the product of 3 distinct primes.

1140871638 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1140871596 and 1140871605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140871631) 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, 95072631 + ... + 95072642.

It is an arithmetic number, because the mean of its divisors is an integer number (285217911).

Almost surely, 2^1140871638 is an apocalyptic number.

1140871638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1140871638 is a wasteful number, since it uses less digits than its factorization.

1140871638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190145278.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 1140871638 is about 33776.7914106713. The cubic root of 1140871638 is about 1044.9101020779.

The spelling of 1140871638 in words is "one billion, one hundred forty million, eight hundred seventy-one thousand, six hundred thirty-eight".