913109785137 has 16 divisors (see below), whose sum is σ = 1475732986560. Its totient is φ = 553399869600.

The previous prime is 913109785127. The next prime is 913109785199. The reversal of 913109785137 is 731587901319.

913109785137 is a `hidden beast` number, since 9 + 1 + 31 + 0 + 97 + 8 + 513 + 7 = 666.

It is not a de Polignac number, because 913109785137 - 2⁴ = 913109785121 is a prime.

It is a super-2 number, since 2×913109785137² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (913109785127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1537221564 + ... + 1537222157.

It is an arithmetic number, because the mean of its divisors is an integer number (92233311660).

Almost surely, 2^913109785137 is an apocalyptic number.

It is an amenable number.

913109785137 is a deficient number, since it is larger than the sum of its proper divisors (562623201423).

913109785137 is a wasteful number, since it uses less digits than its factorization.

913109785137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3074443741 (or 3074443735 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The spelling of 913109785137 in words is "nine hundred thirteen billion, one hundred nine million, seven hundred eighty-five thousand, one hundred thirty-seven".