1073455861 has 2 divisors, whose sum is σ = 1073455862. Its totient is φ = 1073455860.

The previous prime is 1073455841. The next prime is 1073455919. The reversal of 1073455861 is 1685543701.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1068897636 + 4558225 = 32694^2 + 2135^2 .

It is a cyclic number.

It is not a de Polignac number, because 1073455861 - 2²¹ = 1071358709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1073455811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536727930 + 536727931.

It is an arithmetic number, because the mean of its divisors is an integer number (536727931).

Almost surely, 2^1073455861 is an apocalyptic number.

It is an amenable number.

1073455861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1073455861 is an equidigital number, since it uses as much as digits as its factorization.

1073455861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 1073455861 is about 32763.6362603420. The cubic root of 1073455861 is about 1023.9090867392.

The spelling of 1073455861 in words is "one billion, seventy-three million, four hundred fifty-five thousand, eight hundred sixty-one".