1878325681 has 8 divisors (see below), whose sum is σ = 1939624704. Its totient is φ = 1817070960.

The previous prime is 1878325667. The next prime is 1878325723. The reversal of 1878325681 is 1865238781.

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 1878325681 - 2⁵ = 1878325649 is a prime.

It is a super-2 number, since 2×1878325681² = 7056214727808227522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1878325181) 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, 89835 + ... + 108751.

It is an arithmetic number, because the mean of its divisors is an integer number (242453088).

Almost surely, 2^1878325681 is an apocalyptic number.

It is an amenable number.

1878325681 is a deficient number, since it is larger than the sum of its proper divisors (61299023).

1878325681 is a wasteful number, since it uses less digits than its factorization.

1878325681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22151.

The product of its digits is 645120, while the sum is 49.

The square root of 1878325681 is about 43339.6548324972. The cubic root of 1878325681 is about 1233.8346585183.

The spelling of 1878325681 in words is "one billion, eight hundred seventy-eight million, three hundred twenty-five thousand, six hundred eighty-one".