18741197434 has 4 divisors (see below), whose sum is σ = 28111796154. Its totient is φ = 9370598716.

The previous prime is 18741197399. The next prime is 18741197471. The reversal of 18741197434 is 43479114781.

18741197434 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43479114781 = 2131 ⋅20403151.

It can be written as a sum of positive squares in only one way, i.e., 11268459409 + 7472738025 = 106153^2 + 86445^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4685299357 + ... + 4685299360.

Almost surely, 2^18741197434 is an apocalyptic number.

18741197434 is a deficient number, since it is larger than the sum of its proper divisors (9370598720).

18741197434 is an equidigital number, since it uses as much as digits as its factorization.

18741197434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9370598719.

The product of its digits is 677376, while the sum is 49.

The spelling of 18741197434 in words is "eighteen billion, seven hundred forty-one million, one hundred ninety-seven thousand, four hundred thirty-four".