1082892721 has 2 divisors, whose sum is σ = 1082892722. Its totient is φ = 1082892720.

The previous prime is 1082892719. The next prime is 1082892743. The reversal of 1082892721 is 1272982801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 870899121 + 211993600 = 29511^2 + 14560^2 .

It is a cyclic number.

It is not a de Polignac number, because 1082892721 - 2¹ = 1082892719 is a prime.

Together with 1082892719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1082892761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541446360 + 541446361.

It is an arithmetic number, because the mean of its divisors is an integer number (541446361).

Almost surely, 2^1082892721 is an apocalyptic number.

It is an amenable number.

1082892721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1082892721 is an equidigital number, since it uses as much as digits as its factorization.

1082892721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 1082892721 is about 32907.3353676654. The cubic root of 1082892721 is about 1026.9007668199.

The spelling of 1082892721 in words is "one billion, eighty-two million, eight hundred ninety-two thousand, seven hundred twenty-one".