38966161193 has 4 divisors (see below), whose sum is σ = 41258288340. Its totient is φ = 36674034048.

The previous prime is 38966161189. The next prime is 38966161237. The reversal of 38966161193 is 39116166983.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22562443264 + 16403717929 = 150208^2 + 128077^2 .

It is a cyclic number.

It is not a de Polignac number, because 38966161193 - 2² = 38966161189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38966161133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1146063548 + ... + 1146063581.

It is an arithmetic number, because the mean of its divisors is an integer number (10314572085).

Almost surely, 2^38966161193 is an apocalyptic number.

It is an amenable number.

38966161193 is a deficient number, since it is larger than the sum of its proper divisors (2292127147).

38966161193 is a wasteful number, since it uses less digits than its factorization.

38966161193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292127146.

The product of its digits is 1259712, while the sum is 53.

The spelling of 38966161193 in words is "thirty-eight billion, nine hundred sixty-six million, one hundred sixty-one thousand, one hundred ninety-three".