1120345813 has 2 divisors, whose sum is σ = 1120345814. Its totient is φ = 1120345812.

The previous prime is 1120345771. The next prime is 1120345817. The reversal of 1120345813 is 3185430211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 567249489 + 553096324 = 23817^2 + 23518^2 .

It is an emirp because it is prime and its reverse (3185430211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1120345813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1120345817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560172906 + 560172907.

It is an arithmetic number, because the mean of its divisors is an integer number (560172907).

Almost surely, 2^1120345813 is an apocalyptic number.

It is an amenable number.

1120345813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120345813 is an equidigital number, since it uses as much as digits as its factorization.

1120345813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1120345813 is about 33471.5672325035. The cubic root of 1120345813 is about 1038.6056922266.

The spelling of 1120345813 in words is "one billion, one hundred twenty million, three hundred forty-five thousand, eight hundred thirteen".