38156543569 has 9 divisors (see below), whose sum is σ = 38368874673. Its totient is φ = 37945384272.

The previous prime is 38156543567. The next prime is 38156543609. The reversal of 38156543569 is 96534565183.

The square root of 38156543569 is 195337.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 19140625 + 38137402944 = 4375^2 + 195288^2 .

It is not a de Polignac number, because 38156543569 - 2¹ = 38156543567 is a prime.

It is a super-2 number, since 2×38156543569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38156543563) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 44731747 + ... + 44732599.

It is an arithmetic number, because the mean of its divisors is an integer number (4263208297).

Almost surely, 2^38156543569 is an apocalyptic number.

38156543569 is the 195337-th square number.

38156543569 is the 97669-th centered octagonal number.

It is an amenable number.

38156543569 is a deficient number, since it is larger than the sum of its proper divisors (212331104).

38156543569 is an frugal number, since it uses more digits than its factorization.

38156543569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164 (or 1082 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 55.

The spelling of 38156543569 in words is "thirty-eight billion, one hundred fifty-six million, five hundred forty-three thousand, five hundred sixty-nine".