30001919 has 2 divisors, whose sum is σ = 30001920. Its totient is φ = 30001918.

The previous prime is 30001901. The next prime is 30001981. The reversal of 30001919 is 91910003.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30001919 - 2¹⁶ = 29936383 is a prime.

It is a super-2 number, since 2×30001919² = 1800230287365122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 30001894 and 30001903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30001999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15000959 + 15000960.

It is an arithmetic number, because the mean of its divisors is an integer number (15000960).

Almost surely, 2^30001919 is an apocalyptic number.

30001919 is a deficient number, since it is larger than the sum of its proper divisors (1).

30001919 is an equidigital number, since it uses as much as digits as its factorization.

30001919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 30001919 is about 5477.4007521816. The cubic root of 30001919 is about 310.7298757643.

The spelling of 30001919 in words is "thirty million, one thousand, nine hundred nineteen".