1113921587 has 2 divisors, whose sum is σ = 1113921588. Its totient is φ = 1113921586.

The previous prime is 1113921551. The next prime is 1113921623. The reversal of 1113921587 is 7851293111.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1113921551) and next prime (1113921623).

It is a cyclic number.

It is not a de Polignac number, because 1113921587 - 2²⁰ = 1112873011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1113921587.

It is not a weakly prime, because it can be changed into another prime (1113921547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556960793 + 556960794.

It is an arithmetic number, because the mean of its divisors is an integer number (556960794).

Almost surely, 2^1113921587 is an apocalyptic number.

1113921587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113921587 is an equidigital number, since it uses as much as digits as its factorization.

1113921587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 38.

The square root of 1113921587 is about 33375.4638469640. The cubic root of 1113921587 is about 1036.6167135882.

The spelling of 1113921587 in words is "one billion, one hundred thirteen million, nine hundred twenty-one thousand, five hundred eighty-seven".