18740944455 has 64 divisors (see below), whose sum is σ = 30777753600. Its totient is φ = 9735598080.

The previous prime is 18740944441. The next prime is 18740944457. The reversal of 18740944455 is 55444904781.

It is not a de Polignac number, because 18740944455 - 2²³ = 18732555847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18740944398 and 18740944407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18740944457) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39124906 + ... + 39125384.

It is an arithmetic number, because the mean of its divisors is an integer number (480902400).

Almost surely, 2^18740944455 is an apocalyptic number.

18740944455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18740944455 is a deficient number, since it is larger than the sum of its proper divisors (12036809145).

18740944455 is a wasteful number, since it uses less digits than its factorization.

18740944455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944.

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 18740944455 in words is "eighteen billion, seven hundred forty million, nine hundred forty-four thousand, four hundred fifty-five".