1140688387 has 2 divisors, whose sum is σ = 1140688388. Its totient is φ = 1140688386.

The previous prime is 1140688363. The next prime is 1140688399. The reversal of 1140688387 is 7838860411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1140688387 - 2¹⁵ = 1140655619 is a prime.

It is not a weakly prime, because it can be changed into another prime (1140688327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570344193 + 570344194.

It is an arithmetic number, because the mean of its divisors is an integer number (570344194).

Almost surely, 2^1140688387 is an apocalyptic number.

1140688387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140688387 is an equidigital number, since it uses as much as digits as its factorization.

1140688387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 1140688387 is about 33774.0786254784. The cubic root of 1140688387 is about 1044.8541533139.

The spelling of 1140688387 in words is "one billion, one hundred forty million, six hundred eighty-eight thousand, three hundred eighty-seven".