80385381 has 6 divisors (see below), whose sum is σ = 116112230. Its totient is φ = 53590248.

The previous prime is 80385377. The next prime is 80385421. The reversal of 80385381 is 18358308.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 73256481 + 7128900 = 8559^2 + 2670^2 .

It is not a de Polignac number, because 80385381 - 2² = 80385377 is a prime.

It is a super-2 number, since 2×80385381² = 12923618957030322, which 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 (80385341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4465846 + ... + 4465863.

Almost surely, 2^80385381 is an apocalyptic number.

It is an amenable number.

80385381 is a deficient number, since it is larger than the sum of its proper divisors (35726849).

80385381 is a wasteful number, since it uses less digits than its factorization.

80385381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8931715 (or 8931712 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 80385381 is about 8965.7894800179. The cubic root of 80385381 is about 431.5777284474.

The spelling of 80385381 in words is "eighty million, three hundred eighty-five thousand, three hundred eighty-one".