39948181490 has 96 divisors (see below), whose sum is σ = 86449963824. Its totient is φ = 13243453440.

The previous prime is 39948181489. The next prime is 39948181513. The reversal of 39948181490 is 9418184993.

It can be written as a sum of positive squares in 8 ways, for example, as 1677475849 + 38270705641 = 40957^2 + 195629^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2261372 + ... + 2278968.

Almost surely, 2^39948181490 is an apocalyptic number.

39948181490 is an abundant number, since it is smaller than the sum of its proper divisors (46501782334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39948181490 is a wasteful number, since it uses less digits than its factorization.

39948181490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17772 (or 17765 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 56.

The spelling of 39948181490 in words is "thirty-nine billion, nine hundred forty-eight million, one hundred eighty-one thousand, four hundred ninety".