18630761426 has 8 divisors (see below), whose sum is σ = 28131216384. Its totient is φ = 9253689300.

The previous prime is 18630761423. The next prime is 18630761447. The reversal of 18630761426 is 62416703681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18630761423) 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, 30845330 + ... + 30845933.

It is an arithmetic number, because the mean of its divisors is an integer number (3516402048).

Almost surely, 2^18630761426 is an apocalyptic number.

18630761426 is a deficient number, since it is larger than the sum of its proper divisors (9500454958).

18630761426 is a wasteful number, since it uses less digits than its factorization.

18630761426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61691416.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 18630761426 in words is "eighteen billion, six hundred thirty million, seven hundred sixty-one thousand, four hundred twenty-six".