3918072242 has 18 divisors (see below), whose sum is σ = 6837717663. Its totient is φ = 1678908252.

The previous prime is 3918072203. The next prime is 3918072247. The reversal of 3918072242 is 2422708193.

It can be written as a sum of positive squares in only one way, i.e., 1959036121 + 1959036121 = 44261^2 + 44261^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=44261.

It is a junction number, because it is equal to n+sod(n) for n = 3918072196 and 3918072205.

It is not an unprimeable number, because it can be changed into a prime (3918072247) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 616493 + ... + 622815.

Almost surely, 2^3918072242 is an apocalyptic number.

3918072242 is a deficient number, since it is larger than the sum of its proper divisors (2919645421).

3918072242 is an frugal number, since it uses more digits than its factorization.

3918072242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12662 (or 6332 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 3918072242 is about 62594.5064841956. The cubic root of 3918072242 is about 1576.4885219827.

The spelling of 3918072242 in words is "three billion, nine hundred eighteen million, seventy-two thousand, two hundred forty-two".