133620919 has 2 divisors, whose sum is σ = 133620920. Its totient is φ = 133620918.

The previous prime is 133620853. The next prime is 133620923. The reversal of 133620919 is 919026331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133620919 is a prime.

It is a super-2 number, since 2×133620919² = 35709099988809122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133620959) 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 as a sum of consecutive naturals, namely, 66810459 + 66810460.

It is an arithmetic number, because the mean of its divisors is an integer number (66810460).

Almost surely, 2^133620919 is an apocalyptic number.

133620919 is a deficient number, since it is larger than the sum of its proper divisors (1).

133620919 is an equidigital number, since it uses as much as digits as its factorization.

133620919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 133620919 is about 11559.4515008282. The cubic root of 133620919 is about 511.2399905183.

The spelling of 133620919 in words is "one hundred thirty-three million, six hundred twenty thousand, nine hundred nineteen".