1081896493 has 2 divisors, whose sum is σ = 1081896494. Its totient is φ = 1081896492.

The previous prime is 1081896457. The next prime is 1081896521. The reversal of 1081896493 is 3946981801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1003432329 + 78464164 = 31677^2 + 8858^2 .

It is a cyclic number.

It is not a de Polignac number, because 1081896493 - 2²¹ = 1079799341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1081866493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540948246 + 540948247.

It is an arithmetic number, because the mean of its divisors is an integer number (540948247).

Almost surely, 2^1081896493 is an apocalyptic number.

It is an amenable number.

1081896493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081896493 is an equidigital number, since it uses as much as digits as its factorization.

1081896493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 1081896493 is about 32892.1950164473. The cubic root of 1081896493 is about 1026.5857644947.

The spelling of 1081896493 in words is "one billion, eighty-one million, eight hundred ninety-six thousand, four hundred ninety-three".