1878634134 has 80 divisors (see below), whose sum is σ = 4548511968. Its totient is φ = 576108288.

The previous prime is 1878634127. The next prime is 1878634217. The reversal of 1878634134 is 4314368781.

1878634134 is a `hidden beast` number, since 1 + 8 + 7 + 8 + 634 + 1 + 3 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1878634134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 708399 + ... + 711045.

Almost surely, 2^1878634134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1878634134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2274255984).

1878634134 is an abundant number, since it is smaller than the sum of its proper divisors (2669877834).

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

1878634134 is a wasteful number, since it uses less digits than its factorization.

1878634134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011 (or 3002 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 1878634134 is about 43343.2132403679. The cubic root of 1878634134 is about 1233.9021936951.

The spelling of 1878634134 in words is "one billion, eight hundred seventy-eight million, six hundred thirty-four thousand, one hundred thirty-four".