1140135636 has 24 divisors (see below), whose sum is σ = 2664446400. Its totient is φ = 379455232.

The previous prime is 1140135569. The next prime is 1140135653. The reversal of 1140135636 is 6365310411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65661 + ... + 81188.

It is an arithmetic number, because the mean of its divisors is an integer number (111018600).

Almost surely, 2^1140135636 is an apocalyptic number.

It is an amenable number.

1140135636 is an abundant number, since it is smaller than the sum of its proper divisors (1524310764).

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

1140135636 is a wasteful number, since it uses less digits than its factorization.

1140135636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147503 (or 147501 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1140135636 is about 33765.8945683363. The cubic root of 1140135636 is about 1044.6853553909.

The spelling of 1140135636 in words is "one billion, one hundred forty million, one hundred thirty-five thousand, six hundred thirty-six".