15852795389 has 4 divisors (see below), whose sum is σ = 15876779100. Its totient is φ = 15828811680.

The previous prime is 15852795377. The next prime is 15852795403. The reversal of 15852795389 is 98359725851.

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 9934108900 + 5918686489 = 99670^2 + 76933^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15852795389 is a prime.

It is a super-2 number, since 2×15852795389² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15852795349) 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, 11990864 + ... + 11992185.

It is an arithmetic number, because the mean of its divisors is an integer number (3969194775).

Almost surely, 2^15852795389 is an apocalyptic number.

It is an amenable number.

15852795389 is a deficient number, since it is larger than the sum of its proper divisors (23983711).

15852795389 is an equidigital number, since it uses as much as digits as its factorization.

15852795389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23983710.

The product of its digits is 27216000, while the sum is 62.

The spelling of 15852795389 in words is "fifteen billion, eight hundred fifty-two million, seven hundred ninety-five thousand, three hundred eighty-nine".