18738615342 has 32 divisors (see below), whose sum is σ = 38052064512. Its totient is φ = 6150475584.

The previous prime is 18738615319. The next prime is 18738615349. The reversal of 18738615342 is 24351683781.

It is a super-2 number, since 2×18738615342² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18738615291 and 18738615300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18738615349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1158978 + ... + 1175034.

It is an arithmetic number, because the mean of its divisors is an integer number (1189127016).

Almost surely, 2^18738615342 is an apocalyptic number.

18738615342 is an abundant number, since it is smaller than the sum of its proper divisors (19313449170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18738615342 is a wasteful number, since it uses less digits than its factorization.

18738615342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19032.

The product of its digits is 967680, while the sum is 48.

The spelling of 18738615342 in words is "eighteen billion, seven hundred thirty-eight million, six hundred fifteen thousand, three hundred forty-two".