1868830438 has 4 divisors (see below), whose sum is σ = 2803245660. Its totient is φ = 934415218.

The previous prime is 1868830433. The next prime is 1868830459. The reversal of 1868830438 is 8340388681.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1868830391 and 1868830400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868830433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 467207608 + ... + 467207611.

It is an arithmetic number, because the mean of its divisors is an integer number (700811415).

Almost surely, 2^1868830438 is an apocalyptic number.

1868830438 is a deficient number, since it is larger than the sum of its proper divisors (934415222).

1868830438 is an equidigital number, since it uses as much as digits as its factorization.

1868830438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934415221.

The product of its (nonzero) digits is 884736, while the sum is 49.

The square root of 1868830438 is about 43229.9715243950. The cubic root of 1868830438 is about 1231.7520667347.

The spelling of 1868830438 in words is "one billion, eight hundred sixty-eight million, eight hundred thirty thousand, four hundred thirty-eight".