919191914 has 4 divisors (see below), whose sum is σ = 1378787874. Its totient is φ = 459595956.

The previous prime is 919191913. The next prime is 919191919. The reversal of 919191914 is 419191919.

919191914 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 741636289 + 177555625 = 27233^2 + 13325^2 .

It is not an unprimeable number, because it can be changed into a prime (919191913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 229797977 + ... + 229797980.

Almost surely, 2^919191914 is an apocalyptic number.

919191914 is a deficient number, since it is larger than the sum of its proper divisors (459595960).

919191914 is a wasteful number, since it uses less digits than its factorization.

919191914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459595959.

The product of its digits is 26244, while the sum is 44.

The square root of 919191914 is about 30318.1779465719. The cubic root of 919191914 is about 972.3039835969.

The spelling of 919191914 in words is "nine hundred nineteen million, one hundred ninety-one thousand, nine hundred fourteen".