18734549371 has 2 divisors, whose sum is σ = 18734549372. Its totient is φ = 18734549370.

The previous prime is 18734549203. The next prime is 18734549377. The reversal of 18734549371 is 17394543781.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18734549371 - 2¹³ = 18734541179 is a prime.

It is not a weakly prime, because it can be changed into another prime (18734549377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9367274685 + 9367274686.

It is an arithmetic number, because the mean of its divisors is an integer number (9367274686).

Almost surely, 2^18734549371 is an apocalyptic number.

18734549371 is a deficient number, since it is larger than the sum of its proper divisors (1).

18734549371 is an equidigital number, since it uses as much as digits as its factorization.

18734549371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 52.

The spelling of 18734549371 in words is "eighteen billion, seven hundred thirty-four million, five hundred forty-nine thousand, three hundred seventy-one".