5631378418 has 16 divisors (see below), whose sum is σ = 8947597824. Its totient is φ = 2648980800.

The previous prime is 5631378383. The next prime is 5631378481. The reversal of 5631378418 is 8148731365.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54271 + ... + 119197.

It is an arithmetic number, because the mean of its divisors is an integer number (559224864).

Almost surely, 2^5631378418 is an apocalyptic number.

5631378418 is a deficient number, since it is larger than the sum of its proper divisors (3316219406).

5631378418 is a wasteful number, since it uses less digits than its factorization.

5631378418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67497.

The product of its digits is 483840, while the sum is 46.

The square root of 5631378418 is about 75042.5107389138. The cubic root of 5631378418 is about 1779.1186161651.

The spelling of 5631378418 in words is "five billion, six hundred thirty-one million, three hundred seventy-eight thousand, four hundred eighteen".