1187734013 has 2 divisors, whose sum is σ = 1187734014. Its totient is φ = 1187734012.

The previous prime is 1187733983. The next prime is 1187734027. The reversal of 1187734013 is 3104377811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1168135684 + 19598329 = 34178^2 + 4427^2 .

It is a cyclic number.

It is not a de Polignac number, because 1187734013 - 2⁶ = 1187733949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1187734313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593867006 + 593867007.

It is an arithmetic number, because the mean of its divisors is an integer number (593867007).

Almost surely, 2^1187734013 is an apocalyptic number.

It is an amenable number.

1187734013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187734013 is an equidigital number, since it uses as much as digits as its factorization.

1187734013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 1187734013 is about 34463.5171304381. The cubic root of 1187734013 is about 1059.0254520412.

The spelling of 1187734013 in words is "one billion, one hundred eighty-seven million, seven hundred thirty-four thousand, thirteen".