913949120219 has 4 divisors (see below), whose sum is σ = 931193443296. Its totient is φ = 896704797144.

The previous prime is 913949120209. The next prime is 913949120257. The reversal of 913949120219 is 912021949319.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-913949120219 is a prime.

It is a super-2 number, since 2×913949120219² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (913949120209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8622161459 + ... + 8622161564.

It is an arithmetic number, because the mean of its divisors is an integer number (232798360824).

Almost surely, 2^913949120219 is an apocalyptic number.

913949120219 is a deficient number, since it is larger than the sum of its proper divisors (17244323077).

913949120219 is a wasteful number, since it uses less digits than its factorization.

913949120219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17244323076.

The product of its (nonzero) digits is 314928, while the sum is 50.

The spelling of 913949120219 in words is "nine hundred thirteen billion, nine hundred forty-nine million, one hundred twenty thousand, two hundred nineteen".