2532138878 has 4 divisors (see below), whose sum is σ = 3798208320. Its totient is φ = 1266069438.

The previous prime is 2532138877. The next prime is 2532138883. The reversal of 2532138878 is 8788312352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2532138877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633034718 + ... + 633034721.

It is an arithmetic number, because the mean of its divisors is an integer number (949552080).

Almost surely, 2^2532138878 is an apocalyptic number.

2532138878 is a deficient number, since it is larger than the sum of its proper divisors (1266069442).

2532138878 is a wasteful number, since it uses less digits than its factorization.

2532138878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266069441.

The product of its digits is 645120, while the sum is 47.

The square root of 2532138878 is about 50320.3624589490. The cubic root of 2532138878 is about 1362.9999517342. Note that the first 4 decimals are identical.

The spelling of 2532138878 in words is "two billion, five hundred thirty-two million, one hundred thirty-eight thousand, eight hundred seventy-eight".