38028661191 has 16 divisors (see below), whose sum is σ = 56394086400. Its totient is φ = 25327542744.

The previous prime is 38028661189. The next prime is 38028661193. The reversal of 38028661191 is 19116682083.

38028661191 is a `hidden beast` number, since 3 + 8 + 0 + 28 + 6 + 611 + 9 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (38028661189) and next prime (38028661193).

It is not a de Polignac number, because 38028661191 - 2¹ = 38028661189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38028661193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 663591 + ... + 718616.

It is an arithmetic number, because the mean of its divisors is an integer number (3524630400).

Almost surely, 2^38028661191 is an apocalyptic number.

38028661191 is a deficient number, since it is larger than the sum of its proper divisors (18365425209).

38028661191 is a wasteful number, since it uses less digits than its factorization.

38028661191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383235 (or 1383229 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 38028661191 in words is "thirty-eight billion, twenty-eight million, six hundred sixty-one thousand, one hundred ninety-one".