1140011640 has 96 divisors (see below), whose sum is σ = 3749775120. Its totient is φ = 300332544.

The previous prime is 1140011611. The next prime is 1140011669. The reversal of 1140011640 is 461100411.

1140011640 is a `hidden beast` number, since 1 + 14 + 0 + 0 + 11 + 640 = 666.

It is an interprime number because it is at equal distance from previous prime (1140011611) and next prime (1140011669).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10804 + ... + 48956.

Almost surely, 2^1140011640 is an apocalyptic number.

1140011640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1140011640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1874887560).

1140011640 is an abundant number, since it is smaller than the sum of its proper divisors (2609763480).

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

1140011640 is a wasteful number, since it uses less digits than its factorization.

1140011640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38253 (or 38246 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1140011640 is about 33764.0584053517. The cubic root of 1140011640 is about 1044.6474822650.

The spelling of 1140011640 in words is "one billion, one hundred forty million, eleven thousand, six hundred forty".