133019969 has 4 divisors (see below), whose sum is σ = 140021040. Its totient is φ = 126018900.

The previous prime is 133019959. The next prime is 133019989. The reversal of 133019969 is 969910331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133019969 - 2²⁰ = 131971393 is a prime.

It is a super-2 number, since 2×133019969² = 35388624305521922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133019959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3500507 + ... + 3500544.

It is an arithmetic number, because the mean of its divisors is an integer number (35005260).

Almost surely, 2^133019969 is an apocalyptic number.

133019969 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

133019969 is a deficient number, since it is larger than the sum of its proper divisors (7001071).

133019969 is an equidigital number, since it uses as much as digits as its factorization.

133019969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7001070.

The product of its (nonzero) digits is 39366, while the sum is 41.

The square root of 133019969 is about 11533.4283281252. The cubic root of 133019969 is about 510.4724175723.

The spelling of 133019969 in words is "one hundred thirty-three million, nineteen thousand, nine hundred sixty-nine".