1878043968 has 98 divisors (see below), whose sum is σ = 5587697994. Its totient is φ = 625999104.

The previous prime is 1878043967. The next prime is 1878044033. The reversal of 1878043968 is 8693408781.

It can be written as a sum of positive squares in only one way, i.e., 1810672704 + 67371264 = 42552^2 + 8208^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1878043967) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 26530 + ... + 66782.

Almost surely, 2^1878043968 is an apocalyptic number.

1878043968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1878043968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2793848997).

1878043968 is an abundant number, since it is smaller than the sum of its proper divisors (3709654026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1878043968 is an frugal number, since it uses more digits than its factorization.

1878043968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40283 (or 40258 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 1878043968 is about 43336.4046501322. The cubic root of 1878043968 is about 1233.7729715515.

The spelling of 1878043968 in words is "one billion, eight hundred seventy-eight million, forty-three thousand, nine hundred sixty-eight".