133244919 has 24 divisors (see below), whose sum is σ = 202430592. Its totient is φ = 87567480.

The previous prime is 133244897. The next prime is 133244939. The reversal of 133244919 is 919442331.

It is not a de Polignac number, because 133244919 - 2¹⁶ = 133179383 is a prime.

It is a super-2 number, since 2×133244919² = 35508416878633122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133244939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13392 + ... + 21114.

It is an arithmetic number, because the mean of its divisors is an integer number (8434608).

Almost surely, 2^133244919 is an apocalyptic number.

133244919 is a deficient number, since it is larger than the sum of its proper divisors (69185673).

133244919 is an frugal number, since it uses more digits than its factorization.

133244919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7809 (or 7797 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 133244919 is about 11543.1762959768. The cubic root of 133244919 is about 510.7600087309.

The spelling of 133244919 in words is "one hundred thirty-three million, two hundred forty-four thousand, nine hundred nineteen".