1532434878 has 108 divisors (see below), whose sum is σ = 3729796200. Its totient is φ = 454499136.

The previous prime is 1532434853. The next prime is 1532434889. The reversal of 1532434878 is 8784342351.

1532434878 is a `hidden beast` number, since 1 + 532 + 4 + 3 + 48 + 78 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 2558023 + ... + 2558621.

It is an arithmetic number, because the mean of its divisors is an integer number (34535150).

Almost surely, 2^1532434878 is an apocalyptic number.

1532434878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1532434878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1864898100).

1532434878 is an abundant number, since it is smaller than the sum of its proper divisors (2197361322).

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

1532434878 is a wasteful number, since it uses less digits than its factorization.

1532434878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 646 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 1532434878 is about 39146.3264943213. The cubic root of 1532434878 is about 1152.9062918501.

The spelling of 1532434878 in words is "one billion, five hundred thirty-two million, four hundred thirty-four thousand, eight hundred seventy-eight".