38131945111 has 32 divisors (see below), whose sum is σ = 44768142720. Its totient is φ = 32184768000.

The previous prime is 38131945087. The next prime is 38131945121. The reversal of 38131945111 is 11154913183.

It is a cyclic number.

It is not a de Polignac number, because 38131945111 - 2²³ = 38123556503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38131945121) by changing a digit.

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, 854001 + ... + 897541.

It is an arithmetic number, because the mean of its divisors is an integer number (1399004460).

Almost surely, 2^38131945111 is an apocalyptic number.

38131945111 is a deficient number, since it is larger than the sum of its proper divisors (6636197609).

38131945111 is a wasteful number, since it uses less digits than its factorization.

38131945111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43707.

The product of its digits is 12960, while the sum is 37.

The spelling of 38131945111 in words is "thirty-eight billion, one hundred thirty-one million, nine hundred forty-five thousand, one hundred eleven".