1438184786842 has 8 divisors (see below), whose sum is σ = 2157298854336. Its totient is φ = 719085168732.

The previous prime is 1438184786789. The next prime is 1438184786873. The reversal of 1438184786842 is 2486874818341.

It is a happy number.

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

It is a super-2 number, since 2×1438184786842² (a number of 25 digits) contains 22 as substring.

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, 3359988 + ... + 3763759.

It is an arithmetic number, because the mean of its divisors is an integer number (269662356792).

Almost surely, 2^{1438184786842} is an apocalyptic number.

1438184786842 is a deficient number, since it is larger than the sum of its proper divisors (719114067494).

1438184786842 is a wasteful number, since it uses less digits than its factorization.

1438184786842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7224692.

The product of its digits is 66060288, while the sum is 64.

The spelling of 1438184786842 in words is "one trillion, four hundred thirty-eight billion, one hundred eighty-four million, seven hundred eighty-six thousand, eight hundred forty-two".