1195881013 has 2 divisors, whose sum is σ = 1195881014. Its totient is φ = 1195881012.

The previous prime is 1195881007. The next prime is 1195881023. The reversal of 1195881013 is 3101885911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 604078084 + 591802929 = 24578^2 + 24327^2 .

It is a cyclic number.

It is not a de Polignac number, because 1195881013 - 2⁵ = 1195880981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1195881023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597940506 + 597940507.

It is an arithmetic number, because the mean of its divisors is an integer number (597940507).

Almost surely, 2^1195881013 is an apocalyptic number.

It is an amenable number.

1195881013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1195881013 is an equidigital number, since it uses as much as digits as its factorization.

1195881013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 37.

The square root of 1195881013 is about 34581.5125898217. The cubic root of 1195881013 is about 1061.4413207122.

The spelling of 1195881013 in words is "one billion, one hundred ninety-five million, eight hundred eighty-one thousand, thirteen".