1878447450 has 192 divisors, whose sum is σ = 5404475520. Its totient is φ = 427392000.

The previous prime is 1878447397. The next prime is 1878447463. The reversal of 1878447450 is 547448781.

It is a self number, because there is not a number n which added to its sum of digits gives 1878447450.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1769920 + ... + 1770980.

It is an arithmetic number, because the mean of its divisors is an integer number (28148310).

Almost surely, 2^1878447450 is an apocalyptic number.

1878447450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1878447450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2702237760).

1878447450 is an abundant number, since it is smaller than the sum of its proper divisors (3526028070).

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

1878447450 is a wasteful number, since it uses less digits than its factorization.

1878447450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153 (or 1148 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 48.

The square root of 1878447450 is about 43341.0596317164. The cubic root of 1878447450 is about 1233.8613204842.

The spelling of 1878447450 in words is "one billion, eight hundred seventy-eight million, four hundred forty-seven thousand, four hundred fifty".