74194245253 has 4 divisors (see below), whose sum is σ = 74195294508. Its totient is φ = 74193196000.

The previous prime is 74194245247. The next prime is 74194245269. The reversal of 74194245253 is 35254249147.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35236170369 + 38958074884 = 187713^2 + 197378^2 .

It is a cyclic number.

It is not a de Polignac number, because 74194245253 - 2²¹ = 74192148101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74194215253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410248 + ... + 562753.

It is an arithmetic number, because the mean of its divisors is an integer number (18548823627).

Almost surely, 2^74194245253 is an apocalyptic number.

It is an amenable number.

74194245253 is a deficient number, since it is larger than the sum of its proper divisors (1049255).

74194245253 is an equidigital number, since it uses as much as digits as its factorization.

74194245253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049254.

The product of its digits is 1209600, while the sum is 46.

The spelling of 74194245253 in words is "seventy-four billion, one hundred ninety-four million, two hundred forty-five thousand, two hundred fifty-three".