1898125885 has 8 divisors (see below), whose sum is σ = 2278001376. Its totient is φ = 1518333840.

The previous prime is 1898125883. The next prime is 1898125907. The reversal of 1898125885 is 5885218981.

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

It is not a de Polignac number, because 1898125885 - 2¹ = 1898125883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898125883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52902 + ... + 81208.

It is an arithmetic number, because the mean of its divisors is an integer number (284750172).

Almost surely, 2^1898125885 is an apocalyptic number.

It is an amenable number.

1898125885 is a deficient number, since it is larger than the sum of its proper divisors (379875491).

1898125885 is a wasteful number, since it uses less digits than its factorization.

1898125885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41723.

The product of its digits is 1843200, while the sum is 55.

The square root of 1898125885 is about 43567.4865582122. The cubic root of 1898125885 is about 1238.1549661470.

The spelling of 1898125885 in words is "one billion, eight hundred ninety-eight million, one hundred twenty-five thousand, eight hundred eighty-five".