133145519 has 8 divisors (see below), whose sum is σ = 145408032. Its totient is φ = 121171680.

The previous prime is 133145473. The next prime is 133145539. The reversal of 133145519 is 915541331.

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

It is a cyclic number.

It is not a de Polignac number, because 133145519 - 2¹² = 133141423 is a prime.

It is a super-2 number, since 2×133145519² = 35455458459558722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133145539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71204 + ... + 73049.

It is an arithmetic number, because the mean of its divisors is an integer number (18176004).

Almost surely, 2^133145519 is an apocalyptic number.

133145519 is a deficient number, since it is larger than the sum of its proper divisors (12262513).

133145519 is a wasteful number, since it uses less digits than its factorization.

133145519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144337.

The product of its digits is 8100, while the sum is 32.

The square root of 133145519 is about 11538.8699186705. The cubic root of 133145519 is about 510.6329690532.

The spelling of 133145519 in words is "one hundred thirty-three million, one hundred forty-five thousand, five hundred nineteen".