238038591402109 has 16 divisors (see below), whose sum is σ = 253353699188208. Its totient is φ = 222869417951232.

The previous prime is 238038591402107. The next prime is 238038591402121. The reversal of 238038591402109 is 901204195830832.

It can be written as a sum of positive squares in 8 ways, for example, as 65706101164900 + 172332490237209 = 8105930^2 + 13127547^2 .

It is a cyclic number.

It is not a de Polignac number, because 238038591402109 - 2¹ = 238038591402107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 238038591402109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238038591402107) 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, 121332709 + ... + 123278965.

It is an arithmetic number, because the mean of its divisors is an integer number (15834606199263).

Almost surely, 2^{238038591402109} is an apocalyptic number.

It is an amenable number.

238038591402109 is a deficient number, since it is larger than the sum of its proper divisors (15315107786099).

238038591402109 is a wasteful number, since it uses less digits than its factorization.

238038591402109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983744.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 238038591402109 in words is "two hundred thirty-eight trillion, thirty-eight billion, five hundred ninety-one million, four hundred two thousand, one hundred nine".