18930130442 has 16 divisors (see below), whose sum is σ = 28449584640. Its totient is φ = 9446953392.

The previous prime is 18930130441. The next prime is 18930130447. The reversal of 18930130442 is 24403103981.

It is a super-2 number, since 2×18930130442² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18930130441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3019403 + ... + 3025665.

It is an arithmetic number, because the mean of its divisors is an integer number (1778099040).

Almost surely, 2^18930130442 is an apocalyptic number.

18930130442 is a deficient number, since it is larger than the sum of its proper divisors (9519454198).

18930130442 is a wasteful number, since it uses less digits than its factorization.

18930130442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8917.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 18930130442 in words is "eighteen billion, nine hundred thirty million, one hundred thirty thousand, four hundred forty-two".