1838142859 has 8 divisors (see below), whose sum is σ = 2211299840. Its totient is φ = 1492627176.

The previous prime is 1838142851. The next prime is 1838142871. The reversal of 1838142859 is 9582418381.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1838142859 - 2³ = 1838142851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1838142851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6910179 + ... + 6910444.

It is an arithmetic number, because the mean of its divisors is an integer number (276412480).

Almost surely, 2^1838142859 is an apocalyptic number.

1838142859 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1838142859 is a deficient number, since it is larger than the sum of its proper divisors (373156981).

1838142859 is a wasteful number, since it uses less digits than its factorization.

1838142859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13820649.

The product of its digits is 552960, while the sum is 49.

The square root of 1838142859 is about 42873.5683026267. The cubic root of 1838142859 is about 1224.9727294221.

The spelling of 1838142859 in words is "one billion, eight hundred thirty-eight million, one hundred forty-two thousand, eight hundred fifty-nine".