1245136113 has 24 divisors (see below), whose sum is σ = 1941331392. Its totient is φ = 764476128.

The previous prime is 1245136097. The next prime is 1245136121. The reversal of 1245136113 is 3116315421.

It is a happy number.

1245136113 is a `hidden beast` number, since 1 + 2 + 45 + 1 + 3 + 611 + 3 = 666.

It is not a de Polignac number, because 1245136113 - 2⁴ = 1245136097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1245136133) 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, 39820 + ... + 63842.

It is an arithmetic number, because the mean of its divisors is an integer number (80888808).

Almost surely, 2^1245136113 is an apocalyptic number.

1245136113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1245136113 is a deficient number, since it is larger than the sum of its proper divisors (696195279).

1245136113 is a wasteful number, since it uses less digits than its factorization.

1245136113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24485 (or 24482 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 1245136113 is about 35286.4862659914. The cubic root of 1245136113 is about 1075.8183386306.

The spelling of 1245136113 in words is "one billion, two hundred forty-five million, one hundred thirty-six thousand, one hundred thirteen".