380939543209 has 9 divisors (see below), whose sum is σ = 386424909559. Its totient is φ = 375530993320.

The previous prime is 380939543197. The next prime is 380939543221. The reversal of 380939543209 is 902345939083.

It is a happy number.

The square root of 380939543209 is 617203.

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

It is an interprime number because it is at equal distance from previous prime (380939543197) and next prime (380939543221).

It can be written as a sum of positive squares in only one way, i.e., 19464435225 + 361475107984 = 139515^2 + 601228^2 .

It is not a de Polignac number, because 380939543209 - 2¹⁹ = 380939018921 is a prime.

It is a super-2 number, since 2×380939543209² (a number of 24 digits) contains 22 as substring.

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 380939543209.

It is not an unprimeable number, because it can be changed into a prime (380939543009) 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, 43817067 + ... + 43825759.

Almost surely, 2^380939543209 is an apocalyptic number.

380939543209 is the 617203-rd square number.

380939543209 is the 308602-nd centered octagonal number.

It is an amenable number.

380939543209 is a deficient number, since it is larger than the sum of its proper divisors (5485366350).

380939543209 is an frugal number, since it uses more digits than its factorization.

380939543209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17528 (or 8764 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 55.

The spelling of 380939543209 in words is "three hundred eighty billion, nine hundred thirty-nine million, five hundred forty-three thousand, two hundred nine".