6181878782 has 4 divisors (see below), whose sum is σ = 9272818176. Its totient is φ = 3090939390.

The previous prime is 6181878767. The next prime is 6181878799. The reversal of 6181878782 is 2878781816.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1545469694 + ... + 1545469697.

It is an arithmetic number, because the mean of its divisors is an integer number (2318204544).

Almost surely, 2^6181878782 is an apocalyptic number.

6181878782 is a deficient number, since it is larger than the sum of its proper divisors (3090939394).

6181878782 is a wasteful number, since it uses less digits than its factorization.

6181878782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3090939393.

The product of its digits is 2408448, while the sum is 56.

The square root of 6181878782 is about 78624.9246867684. The cubic root of 6181878782 is about 1835.2990013850.

The spelling of 6181878782 in words is "six billion, one hundred eighty-one million, eight hundred seventy-eight thousand, seven hundred eighty-two".