4240537538 has 4 divisors (see below), whose sum is σ = 6360806310. Its totient is φ = 2120268768.

The previous prime is 4240537529. The next prime is 4240537597. The reversal of 4240537538 is 8357350424.

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., 2716181689 + 1524355849 = 52117^2 + 39043^2 .

It is a super-2 number, since 2×4240537538² = 35964317222374202888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4240537495 and 4240537504.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060134383 + ... + 1060134386.

Almost surely, 2^4240537538 is an apocalyptic number.

4240537538 is a deficient number, since it is larger than the sum of its proper divisors (2120268772).

4240537538 is a wasteful number, since it uses less digits than its factorization.

4240537538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120268771.

The product of its (nonzero) digits is 403200, while the sum is 41.

The square root of 4240537538 is about 65119.4098406919. The cubic root of 4240537538 is about 1618.6028621190.

The spelling of 4240537538 in words is "four billion, two hundred forty million, five hundred thirty-seven thousand, five hundred thirty-eight".