38511863109 has 12 divisors (see below), whose sum is σ = 56458519936. Its totient is φ = 25291372392.

The previous prime is 38511863099. The next prime is 38511863111. The reversal of 38511863109 is 90136811583.

It is a happy number.

38511863109 is a `hidden beast` number, since 3 + 8 + 5 + 1 + 1 + 8 + 631 + 0 + 9 = 666.

It is not a de Polignac number, because 38511863109 - 2⁷ = 38511862981 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 (38511863119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31932949 + ... + 31934154.

Almost surely, 2^38511863109 is an apocalyptic number.

It is an amenable number.

38511863109 is a deficient number, since it is larger than the sum of its proper divisors (17946656827).

38511863109 is a wasteful number, since it uses less digits than its factorization.

38511863109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63867176 (or 63867173 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 38511863109 in words is "thirty-eight billion, five hundred eleven million, eight hundred sixty-three thousand, one hundred nine".