1878081408 has 288 divisors, whose sum is σ = 6370050960. Its totient is φ = 531062784.

The previous prime is 1878081397. The next prime is 1878081419. The reversal of 1878081408 is 8041808781.

It is an interprime number because it is at equal distance from previous prime (1878081397) and next prime (1878081419).

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19361616 + ... + 19361712.

Almost surely, 2^1878081408 is an apocalyptic number.

1878081408 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 1878081408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3185025480).

1878081408 is an abundant number, since it is smaller than the sum of its proper divisors (4491969552).

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

1878081408 is an frugal number, since it uses more digits than its factorization.

1878081408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 45.

The square root of 1878081408 is about 43336.8366173628. The cubic root of 1878081408 is about 1233.7811701797.

The spelling of 1878081408 in words is "one billion, eight hundred seventy-eight million, eighty-one thousand, four hundred eight".