1004995281 has 8 divisors (see below), whose sum is σ = 1398254400. Its totient is φ = 640866512.

The previous prime is 1004995267. The next prime is 1004995283. The reversal of 1004995281 is 1825994001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1004995281 - 2⁷ = 1004995153 is a prime.

It is a super-2 number, since 2×1004995281² = 2020031029664537922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1004995283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7282506 + ... + 7282643.

It is an arithmetic number, because the mean of its divisors is an integer number (174781800).

Almost surely, 2^1004995281 is an apocalyptic number.

It is an amenable number.

1004995281 is a deficient number, since it is larger than the sum of its proper divisors (393259119).

1004995281 is a wasteful number, since it uses less digits than its factorization.

1004995281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14565175.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 1004995281 is about 31701.6605401042. The cubic root of 1004995281 is about 1001.6623287984.

The spelling of 1004995281 in words is "one billion, four million, nine hundred ninety-five thousand, two hundred eighty-one".