18737040628 has 12 divisors (see below), whose sum is σ = 32808223840. Its totient is φ = 9363262392.

The previous prime is 18737040613. The next prime is 18737040649. The reversal of 18737040628 is 82604073781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1306458 + ... + 1320721.

Almost surely, 2^18737040628 is an apocalyptic number.

It is an amenable number.

18737040628 is a deficient number, since it is larger than the sum of its proper divisors (14071183212).

18737040628 is a wasteful number, since it uses less digits than its factorization.

18737040628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628966 (or 2628964 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 46.

The spelling of 18737040628 in words is "eighteen billion, seven hundred thirty-seven million, forty thousand, six hundred twenty-eight".