39456436018 has 8 divisors (see below), whose sum is σ = 60628182300. Its totient is φ = 19247041920.

The previous prime is 39456436007. The next prime is 39456436049. The reversal of 39456436018 is 81063465493.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37362183849 + 2094252169 = 193293^2 + 45763^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240587943 + ... + 240588106.

Almost surely, 2^39456436018 is an apocalyptic number.

39456436018 is a deficient number, since it is larger than the sum of its proper divisors (21171746282).

39456436018 is a wasteful number, since it uses less digits than its factorization.

39456436018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481176092.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 39456436018 in words is "thirty-nine billion, four hundred fifty-six million, four hundred thirty-six thousand, eighteen".