13194381257 has 8 divisors (see below), whose sum is σ = 13597137792. Its totient is φ = 12795479200.

The previous prime is 13194381197. The next prime is 13194381259. The reversal of 13194381257 is 75218349131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13194381257 - 2¹⁰ = 13194380233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13194381259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956669 + ... + 970362.

It is an arithmetic number, because the mean of its divisors is an integer number (1699642224).

Almost surely, 2^13194381257 is an apocalyptic number.

It is an amenable number.

13194381257 is a deficient number, since it is larger than the sum of its proper divisors (402756535).

13194381257 is a wasteful number, since it uses less digits than its factorization.

13194381257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927239.

The product of its digits is 181440, while the sum is 44.

The spelling of 13194381257 in words is "thirteen billion, one hundred ninety-four million, three hundred eighty-one thousand, two hundred fifty-seven".