2431402018 has 4 divisors (see below), whose sum is σ = 3647103030. Its totient is φ = 1215701008.

The previous prime is 2431402007. The next prime is 2431402027. The reversal of 2431402018 is 8102041342.

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., 2387006449 + 44395569 = 48857^2 + 6663^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2431401983 and 2431402001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607850503 + ... + 607850506.

Almost surely, 2^2431402018 is an apocalyptic number.

2431402018 is a deficient number, since it is larger than the sum of its proper divisors (1215701012).

2431402018 is a wasteful number, since it uses less digits than its factorization.

2431402018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215701011.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 2431402018 is about 49309.2488079062. The cubic root of 2431402018 is about 1344.6799343439.

The spelling of 2431402018 in words is "two billion, four hundred thirty-one million, four hundred two thousand, eighteen".