39513694490 has 32 divisors (see below), whose sum is σ = 75336284304. Its totient is φ = 14870246400.

The previous prime is 39513694477. The next prime is 39513694501. The reversal of 39513694490 is 9449631593.

It can be written as a sum of positive squares in 8 ways, for example, as 28750254481 + 10763440009 = 169559^2 + 103747^2 .

It is a super-2 number, since 2×39513694490² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433940 + ... + 517040.

Almost surely, 2^39513694490 is an apocalyptic number.

39513694490 is a deficient number, since it is larger than the sum of its proper divisors (35822589814).

39513694490 is a wasteful number, since it uses less digits than its factorization.

39513694490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85922.

The product of its (nonzero) digits is 3149280, while the sum is 53.

The spelling of 39513694490 in words is "thirty-nine billion, five hundred thirteen million, six hundred ninety-four thousand, four hundred ninety".