74193819 has 16 divisors (see below), whose sum is σ = 116705280. Its totient is φ = 41028480.

The previous prime is 74193809. The next prime is 74193839. The reversal of 74193819 is 91839147.

It is a happy number.

It is not a de Polignac number, because 74193819 - 2⁸ = 74193563 is a prime.

It is a super-2 number, since 2×74193819² = 11009445555609522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74193809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56334 + ... + 57635.

It is an arithmetic number, because the mean of its divisors is an integer number (7294080).

Almost surely, 2^74193819 is an apocalyptic number.

74193819 is a deficient number, since it is larger than the sum of its proper divisors (42511461).

74193819 is a wasteful number, since it uses less digits than its factorization.

74193819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114010.

The product of its digits is 54432, while the sum is 42.

The square root of 74193819 is about 8613.5834006527. The cubic root of 74193819 is about 420.1998651926.

The spelling of 74193819 in words is "seventy-four million, one hundred ninety-three thousand, eight hundred nineteen".