5423138018 has 4 divisors (see below), whose sum is σ = 8134707030. Its totient is φ = 2711569008.

The previous prime is 5423138003. The next prime is 5423138051. The reversal of 5423138018 is 8108313245.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 4514899249 + 908238769 = 67193^2 + 30137^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1355784503 + ... + 1355784506.

Almost surely, 2^5423138018 is an apocalyptic number.

5423138018 is a deficient number, since it is larger than the sum of its proper divisors (2711569012).

5423138018 is a wasteful number, since it uses less digits than its factorization.

5423138018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711569011.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 5423138018 is about 73641.9582710835. The cubic root of 5423138018 is about 1756.9128493443.

The spelling of 5423138018 in words is "five billion, four hundred twenty-three million, one hundred thirty-eight thousand, eighteen".