13185747950 has 12 divisors (see below), whose sum is σ = 24525491280. Its totient is φ = 5274299160.

The previous prime is 13185747937. The next prime is 13185747959. The reversal of 13185747950 is 5974758131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 263714959 = 13185747950 / (1 + 3 + 1 + 8 + 5 + 7 + 4 + 7 + 9 + 5 + 0).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13185747959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131857430 + ... + 131857529.

It is an arithmetic number, because the mean of its divisors is an integer number (2043790940).

Almost surely, 2^13185747950 is an apocalyptic number.

13185747950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13185747950 is a deficient number, since it is larger than the sum of its proper divisors (11339743330).

13185747950 is a wasteful number, since it uses less digits than its factorization.

13185747950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263714971 (or 263714966 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 50.

The spelling of 13185747950 in words is "thirteen billion, one hundred eighty-five million, seven hundred forty-seven thousand, nine hundred fifty".