38128429186 has 4 divisors (see below), whose sum is σ = 57192643782. Its totient is φ = 19064214592.

The previous prime is 38128429181. The next prime is 38128429187. The reversal of 38128429186 is 68192482183.

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

It can be written as a sum of positive squares in only one way, i.e., 37454247961 + 674181225 = 193531^2 + 25965^2 .

It is a super-2 number, since 2×38128429186² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38128429181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9532107295 + ... + 9532107298.

Almost surely, 2^38128429186 is an apocalyptic number.

38128429186 is a deficient number, since it is larger than the sum of its proper divisors (19064214596).

38128429186 is a wasteful number, since it uses less digits than its factorization.

38128429186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19064214595.

The product of its digits is 1327104, while the sum is 52.

The spelling of 38128429186 in words is "thirty-eight billion, one hundred twenty-eight million, four hundred twenty-nine thousand, one hundred eighty-six".