1136999205 has 24 divisors (see below), whose sum is σ = 1995751680. Its totient is φ = 598721760.

The previous prime is 1136999203. The next prime is 1136999209. The reversal of 1136999205 is 5029996311.

It is a happy number.

It is not a de Polignac number, because 1136999205 - 2¹ = 1136999203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1136999203) 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, 156361 + ... + 163470.

It is an arithmetic number, because the mean of its divisors is an integer number (83156320).

Almost surely, 2^1136999205 is an apocalyptic number.

1136999205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1136999205 is a deficient number, since it is larger than the sum of its proper divisors (858752475).

1136999205 is a wasteful number, since it uses less digits than its factorization.

1136999205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319921 (or 319918 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 1136999205 is about 33719.4188117174. The cubic root of 1136999205 is about 1043.7265242428.

The spelling of 1136999205 in words is "one billion, one hundred thirty-six million, nine hundred ninety-nine thousand, two hundred five".