38391028201 has 4 divisors (see below), whose sum is σ = 38394136404. Its totient is φ = 38387920000.

The previous prime is 38391028183. The next prime is 38391028217. The reversal of 38391028201 is 10282019383.

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 12611514601 + 25779513600 = 112301^2 + 160560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38391028201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38391028271) 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, 1535500 + ... + 1560301.

It is an arithmetic number, because the mean of its divisors is an integer number (9598534101).

Almost surely, 2^38391028201 is an apocalyptic number.

It is an amenable number.

38391028201 is a deficient number, since it is larger than the sum of its proper divisors (3108203).

38391028201 is a wasteful number, since it uses less digits than its factorization.

38391028201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3108202.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 38391028201 in words is "thirty-eight billion, three hundred ninety-one million, twenty-eight thousand, two hundred one".