1000898081 has 2 divisors, whose sum is σ = 1000898082. Its totient is φ = 1000898080.

The previous prime is 1000898039. The next prime is 1000898117. The reversal of 1000898081 is 1808980001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 854100625 + 146797456 = 29225^2 + 12116^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000898081 - 2¹⁴ = 1000881697 is a prime.

It is a super-2 number, since 2×1000898081² = 2003593937098965122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1000898021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500449040 + 500449041.

It is an arithmetic number, because the mean of its divisors is an integer number (500449041).

Almost surely, 2^1000898081 is an apocalyptic number.

It is an amenable number.

1000898081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000898081 is an equidigital number, since it uses as much as digits as its factorization.

1000898081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 1000898081 is about 31636.9733223645. The cubic root of 1000898081 is about 1000.2992707614.

The spelling of 1000898081 in words is "one billion, eight hundred ninety-eight thousand, eighty-one".