380897281 has 4 divisors (see below), whose sum is σ = 394031700. Its totient is φ = 367762864.

The previous prime is 380897249. The next prime is 380897327. The reversal of 380897281 is 182798083.

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 129960000 + 250937281 = 11400^2 + 15841^2 .

It is a cyclic number.

It is not a de Polignac number, because 380897281 - 2⁵ = 380897249 is a prime.

It is a super-2 number, since 2×380897281² = 290165477346385922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (380897081) 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, 6567166 + ... + 6567223.

It is an arithmetic number, because the mean of its divisors is an integer number (98507925).

Almost surely, 2^380897281 is an apocalyptic number.

It is an amenable number.

380897281 is a deficient number, since it is larger than the sum of its proper divisors (13134419).

380897281 is a wasteful number, since it uses less digits than its factorization.

380897281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13134418.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 380897281 is about 19516.5898916793. The cubic root of 380897281 is about 724.8852967961.

The spelling of 380897281 in words is "three hundred eighty million, eight hundred ninety-seven thousand, two hundred eighty-one".