1004033381 has 4 divisors (see below), whose sum is σ = 1081266732. Its totient is φ = 926800032.

The previous prime is 1004033377. The next prime is 1004033399. The reversal of 1004033381 is 1833304001.

It is a happy number.

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 96216481 + 907816900 = 9809^2 + 30130^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004033381 - 2² = 1004033377 is a prime.

It is a super-2 number, since 2×1004033381² = 2016166060324582322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004033341) 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 3 ways as a sum of consecutive naturals, for example, 38616656 + ... + 38616681.

It is an arithmetic number, because the mean of its divisors is an integer number (270316683).

Almost surely, 2^1004033381 is an apocalyptic number.

It is an amenable number.

1004033381 is a deficient number, since it is larger than the sum of its proper divisors (77233351).

1004033381 is an equidigital number, since it uses as much as digits as its factorization.

1004033381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77233350.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1004033381 is about 31686.4857786407. The cubic root of 1004033381 is about 1001.3426567992.

Adding to 1004033381 its reverse (1833304001), we get a palindrome (2837337382).

The spelling of 1004033381 in words is "one billion, four million, thirty-three thousand, three hundred eighty-one".