381497169 has 16 divisors (see below), whose sum is σ = 522797184. Its totient is φ = 247305600.

The previous prime is 381497147. The next prime is 381497177. The reversal of 381497169 is 961794183.

It is a happy number.

It is not a de Polignac number, because 381497169 - 2¹⁵ = 381464401 is a prime.

It is a super-2 number, since 2×381497169² = 291080179910029122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (381497069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33267 + ... + 43239.

It is an arithmetic number, because the mean of its divisors is an integer number (32674824).

Almost surely, 2^381497169 is an apocalyptic number.

It is an amenable number.

381497169 is a deficient number, since it is larger than the sum of its proper divisors (141300015).

381497169 is a wasteful number, since it uses less digits than its factorization.

381497169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10328.

The product of its digits is 326592, while the sum is 48.

The square root of 381497169 is about 19531.9525137657. The cubic root of 381497169 is about 725.2656459747.

The spelling of 381497169 in words is "three hundred eighty-one million, four hundred ninety-seven thousand, one hundred sixty-nine".