1087385636 has 12 divisors (see below), whose sum is σ = 1964309760. Its totient is φ = 526154280.

The previous prime is 1087385633. The next prime is 1087385647. The reversal of 1087385636 is 6365837801.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1087385633) 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, 4384496 + ... + 4384743.

It is an arithmetic number, because the mean of its divisors is an integer number (163692480).

Almost surely, 2^1087385636 is an apocalyptic number.

It is an amenable number.

1087385636 is a deficient number, since it is larger than the sum of its proper divisors (876924124).

1087385636 is a wasteful number, since it uses less digits than its factorization.

1087385636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8769274 (or 8769272 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 1087385636 is about 32975.5308675994. The cubic root of 1087385636 is about 1028.3190087786.

The spelling of 1087385636 in words is "one billion, eighty-seven million, three hundred eighty-five thousand, six hundred thirty-six".