1046839681 has 2 divisors, whose sum is σ = 1046839682. Its totient is φ = 1046839680.

The previous prime is 1046839669. The next prime is 1046839697. The reversal of 1046839681 is 1869386401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 899460081 + 147379600 = 29991^2 + 12140^2 .

It is a cyclic number.

It is not a de Polignac number, because 1046839681 - 2⁷ = 1046839553 is a prime.

It is a super-2 number, since 2×1046839681² = 2191746635432363522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1046809681) 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 as a sum of consecutive naturals, namely, 523419840 + 523419841.

It is an arithmetic number, because the mean of its divisors is an integer number (523419841).

Almost surely, 2^1046839681 is an apocalyptic number.

It is an amenable number.

1046839681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1046839681 is an equidigital number, since it uses as much as digits as its factorization.

1046839681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 1046839681 is about 32354.9019624539. The cubic root of 1046839681 is about 1015.3756060921.

The spelling of 1046839681 in words is "one billion, forty-six million, eight hundred thirty-nine thousand, six hundred eighty-one".