1139213636 has 48 divisors (see below), whose sum is σ = 2237905152. Its totient is φ = 502982400.

The previous prime is 1139213591. The next prime is 1139213651. The reversal of 1139213636 is 6363129311.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1139213596 and 1139213605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281306 + ... + 285326.

It is an arithmetic number, because the mean of its divisors is an integer number (46623024).

Almost surely, 2^1139213636 is an apocalyptic number.

It is an amenable number.

1139213636 is a deficient number, since it is larger than the sum of its proper divisors (1098691516).

1139213636 is a wasteful number, since it uses less digits than its factorization.

1139213636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220 (or 4218 counting only the distinct ones).

The product of its digits is 17496, while the sum is 35.

The square root of 1139213636 is about 33752.2389775849. The cubic root of 1139213636 is about 1044.4036755560.

The spelling of 1139213636 in words is "one billion, one hundred thirty-nine million, two hundred thirteen thousand, six hundred thirty-six".