74212819 has 2 divisors, whose sum is σ = 74212820. Its totient is φ = 74212818.

The previous prime is 74212813. The next prime is 74212823. The reversal of 74212819 is 91821247.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74212819 - 2³ = 74212811 is a prime.

It is a super-2 number, since 2×74212819² = 11015085007853522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74212811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37106409 + 37106410.

It is an arithmetic number, because the mean of its divisors is an integer number (37106410).

Almost surely, 2^74212819 is an apocalyptic number.

74212819 is a deficient number, since it is larger than the sum of its proper divisors (1).

74212819 is an equidigital number, since it uses as much as digits as its factorization.

74212819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 34.

The square root of 74212819 is about 8614.6862392080. The cubic root of 74212819 is about 420.2357312352.

The spelling of 74212819 in words is "seventy-four million, two hundred twelve thousand, eight hundred nineteen".