1838237642 has 8 divisors (see below), whose sum is σ = 2919553956. Its totient is φ = 865052992.

The previous prime is 1838237617. The next prime is 1838237677. The reversal of 1838237642 is 2467328381.

It can be written as a sum of positive squares in 2 ways, for example, as 1763916001 + 74321641 = 41999^2 + 8621^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1838237593 and 1838237602.

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, 27032873 + ... + 27032940.

Almost surely, 2^1838237642 is an apocalyptic number.

1838237642 is a deficient number, since it is larger than the sum of its proper divisors (1081316314).

1838237642 is a wasteful number, since it uses less digits than its factorization.

1838237642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54065832.

The product of its digits is 387072, while the sum is 44.

The square root of 1838237642 is about 42874.6736663966. The cubic root of 1838237642 is about 1224.9937841140.

The spelling of 1838237642 in words is "one billion, eight hundred thirty-eight million, two hundred thirty-seven thousand, six hundred forty-two".