1099636389 has 24 divisors (see below), whose sum is σ = 1612416000. Its totient is φ = 722066400.

The previous prime is 1099636387. The next prime is 1099636397. The reversal of 1099636389 is 9836369901.

It is not a de Polignac number, because 1099636389 - 2¹ = 1099636387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099636387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177852 + ... + 183930.

It is an arithmetic number, because the mean of its divisors is an integer number (67184000).

Almost surely, 2^1099636389 is an apocalyptic number.

It is an amenable number.

1099636389 is a deficient number, since it is larger than the sum of its proper divisors (512779611).

1099636389 is a wasteful number, since it uses less digits than its factorization.

1099636389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6385 (or 6382 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The square root of 1099636389 is about 33160.7658084068. The cubic root of 1099636389 is about 1032.1663609805.

The spelling of 1099636389 in words is "one billion, ninety-nine million, six hundred thirty-six thousand, three hundred eighty-nine".