74945219 has 2 divisors, whose sum is σ = 74945220. Its totient is φ = 74945218.

The previous prime is 74945203. The next prime is 74945243. The reversal of 74945219 is 91254947.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74945219 - 2⁴ = 74945203 is a prime.

It is a super-2 number, since 2×74945219² = 11233571701915922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74945279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37472609 + 37472610.

It is an arithmetic number, because the mean of its divisors is an integer number (37472610).

Almost surely, 2^74945219 is an apocalyptic number.

74945219 is a deficient number, since it is larger than the sum of its proper divisors (1).

74945219 is an equidigital number, since it uses as much as digits as its factorization.

74945219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 74945219 is about 8657.0906775891. The cubic root of 74945219 is about 421.6136318981.

The spelling of 74945219 in words is "seventy-four million, nine hundred forty-five thousand, two hundred nineteen".