1878444064 has 96 divisors (see below), whose sum is σ = 4299474816. Its totient is φ = 791285760.

The previous prime is 1878444059. The next prime is 1878444107. The reversal of 1878444064 is 4604448781.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4337992 + ... + 4338424.

It is an arithmetic number, because the mean of its divisors is an integer number (44786196).

Almost surely, 2^1878444064 is an apocalyptic number.

1878444064 is a gapful number since it is divisible by the number (14) 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 1878444064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2149737408).

1878444064 is an abundant number, since it is smaller than the sum of its proper divisors (2421030752).

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

1878444064 is a wasteful number, since it uses less digits than its factorization.

1878444064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 46.

The square root of 1878444064 is about 43341.0205694328. The cubic root of 1878444064 is about 1233.8605791172.

The spelling of 1878444064 in words is "one billion, eight hundred seventy-eight million, four hundred forty-four thousand, sixty-four".