74800819 has 2 divisors, whose sum is σ = 74800820. Its totient is φ = 74800818.

The previous prime is 74800753. The next prime is 74800879. The reversal of 74800819 is 91800847.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74800819 - 2⁹ = 74800307 is a prime.

It is a super-2 number, since 2×74800819² = 11190325046141522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74800879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37400409 + 37400410.

It is an arithmetic number, because the mean of its divisors is an integer number (37400410).

Almost surely, 2^74800819 is an apocalyptic number.

74800819 is a deficient number, since it is larger than the sum of its proper divisors (1).

74800819 is an equidigital number, since it uses as much as digits as its factorization.

74800819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 74800819 is about 8648.7466722063. The cubic root of 74800819 is about 421.3426777629.

The spelling of 74800819 in words is "seventy-four million, eight hundred thousand, eight hundred nineteen".