1881425879 has 8 divisors (see below), whose sum is σ = 1915027968. Its totient is φ = 1848117600.

The previous prime is 1881425869. The next prime is 1881425899. The reversal of 1881425879 is 9785241881.

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 1881425879 - 2⁴ = 1881425863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1881425879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881425849) 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, 60512 + ... + 86165.

It is an arithmetic number, because the mean of its divisors is an integer number (239378496).

Almost surely, 2^1881425879 is an apocalyptic number.

1881425879 is a deficient number, since it is larger than the sum of its proper divisors (33602089).

1881425879 is a wasteful number, since it uses less digits than its factorization.

1881425879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146905.

The product of its digits is 1290240, while the sum is 53.

The square root of 1881425879 is about 43375.4063842634. The cubic root of 1881425879 is about 1234.5131047949.

The spelling of 1881425879 in words is "one billion, eight hundred eighty-one million, four hundred twenty-five thousand, eight hundred seventy-nine".