919538133 has 8 divisors (see below), whose sum is σ = 1226253600. Its totient is φ = 612924048.

The previous prime is 919538129. The next prime is 919538141. The reversal of 919538133 is 331835919.

It is a happy number.

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

It is not a de Polignac number, because 919538133 - 2² = 919538129 is a prime.

It is a super-2 number, since 2×919538133² = 1691100756082251378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (919538533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778 + ... + 42891.

It is an arithmetic number, because the mean of its divisors is an integer number (153281700).

Almost surely, 2^919538133 is an apocalyptic number.

It is an amenable number.

919538133 is a deficient number, since it is larger than the sum of its proper divisors (306715467).

919538133 is a wasteful number, since it uses less digits than its factorization.

919538133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50691.

The product of its digits is 87480, while the sum is 42.

The square root of 919538133 is about 30323.8871683694. The cubic root of 919538133 is about 972.4260429304.

The spelling of 919538133 in words is "nine hundred nineteen million, five hundred thirty-eight thousand, one hundred thirty-three".