39138531045 has 32 divisors (see below), whose sum is σ = 63078480000. Its totient is φ = 20721771264.

The previous prime is 39138531031. The next prime is 39138531059. The reversal of 39138531045 is 54013583193.

It is an interprime number because it is at equal distance from previous prime (39138531031) and next prime (39138531059).

It is not a de Polignac number, because 39138531045 - 2⁵ = 39138531013 is a prime.

It is a super-2 number, since 2×39138531045² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39138530988 and 39138531006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4919731 + ... + 4927679.

It is an arithmetic number, because the mean of its divisors is an integer number (1971202500).

Almost surely, 2^39138531045 is an apocalyptic number.

It is an amenable number.

39138531045 is a deficient number, since it is larger than the sum of its proper divisors (23939948955).

39138531045 is a wasteful number, since it uses less digits than its factorization.

39138531045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10309.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 39138531045 in words is "thirty-nine billion, one hundred thirty-eight million, five hundred thirty-one thousand, forty-five".