133973519 has 2 divisors, whose sum is σ = 133973520. Its totient is φ = 133973518.

The previous prime is 133973501. The next prime is 133973557. The reversal of 133973519 is 915379331.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133973519 is a prime.

It is a super-2 number, since 2×133973519² = 35897807586486722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133973419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66986759 + 66986760.

It is an arithmetic number, because the mean of its divisors is an integer number (66986760).

Almost surely, 2^133973519 is an apocalyptic number.

133973519 is a deficient number, since it is larger than the sum of its proper divisors (1).

133973519 is an equidigital number, since it uses as much as digits as its factorization.

133973519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76545, while the sum is 41.

The square root of 133973519 is about 11574.6930412862. The cubic root of 133973519 is about 511.6892836729.

The spelling of 133973519 in words is "one hundred thirty-three million, nine hundred seventy-three thousand, five hundred nineteen".