1205988713 has 2 divisors, whose sum is σ = 1205988714. Its totient is φ = 1205988712.

The previous prime is 1205988643. The next prime is 1205988743. The reversal of 1205988713 is 3178895021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 630612544 + 575376169 = 25112^2 + 23987^2 .

It is a cyclic number.

It is not a de Polignac number, because 1205988713 - 2⁸ = 1205988457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1205988743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602994356 + 602994357.

It is an arithmetic number, because the mean of its divisors is an integer number (602994357).

Almost surely, 2^1205988713 is an apocalyptic number.

It is an amenable number.

1205988713 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205988713 is an equidigital number, since it uses as much as digits as its factorization.

1205988713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 1205988713 is about 34727.3481999418. The cubic root of 1205988713 is about 1064.4234024604.

The spelling of 1205988713 in words is "one billion, two hundred five million, nine hundred eighty-eight thousand, seven hundred thirteen".