18734549374 has 4 divisors (see below), whose sum is σ = 28101824064. Its totient is φ = 9367274686.

The previous prime is 18734549371. The next prime is 18734549377. The reversal of 18734549374 is 47394543781.

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

It is an interprime number because it is at equal distance from previous prime (18734549371) and next prime (18734549377).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18734549371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4683637342 + ... + 4683637345.

It is an arithmetic number, because the mean of its divisors is an integer number (7025456016).

Almost surely, 2^18734549374 is an apocalyptic number.

18734549374 is a deficient number, since it is larger than the sum of its proper divisors (9367274690).

18734549374 is an equidigital number, since it uses as much as digits as its factorization.

18734549374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9367274689.

The product of its digits is 10160640, while the sum is 55.

The spelling of 18734549374 in words is "eighteen billion, seven hundred thirty-four million, five hundred forty-nine thousand, three hundred seventy-four".