1838642828 has 24 divisors (see below), whose sum is σ = 3511226880. Its totient is φ = 835487120.

The previous prime is 1838642807. The next prime is 1838642873. The reversal of 1838642828 is 8282468381.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256193 + ... + 263271.

It is an arithmetic number, because the mean of its divisors is an integer number (146301120).

Almost surely, 2^1838642828 is an apocalyptic number.

It is an amenable number.

1838642828 is a deficient number, since it is larger than the sum of its proper divisors (1672584052).

1838642828 is a wasteful number, since it uses less digits than its factorization.

1838642828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12997 (or 12995 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 50.

The square root of 1838642828 is about 42879.3986431713. The cubic root of 1838642828 is about 1225.0837822469.

The spelling of 1838642828 in words is "one billion, eight hundred thirty-eight million, six hundred forty-two thousand, eight hundred twenty-eight".