30249019 has 2 divisors, whose sum is σ = 30249020. Its totient is φ = 30249018.

The previous prime is 30248993. The next prime is 30249047. The reversal of 30249019 is 91094203.

It is a happy number.

It is an a-pointer prime, because the next prime (30249047) can be obtained adding 30249019 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30249019 - 2⁷ = 30248891 is a prime.

It is a super-2 number, since 2×30249019² = 1830006300924722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30249119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15124509 + 15124510.

It is an arithmetic number, because the mean of its divisors is an integer number (15124510).

Almost surely, 2^30249019 is an apocalyptic number.

30249019 is a deficient number, since it is larger than the sum of its proper divisors (1).

30249019 is an equidigital number, since it uses as much as digits as its factorization.

30249019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 30249019 is about 5499.9108174588. The cubic root of 30249019 is about 311.5806159850.

The spelling of 30249019 in words is "thirty million, two hundred forty-nine thousand, nineteen".