1187364863 has 2 divisors, whose sum is σ = 1187364864. Its totient is φ = 1187364862.

The previous prime is 1187364851. The next prime is 1187364877. The reversal of 1187364863 is 3684637811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1187364863 - 2⁶ = 1187364799 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1187364463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593682431 + 593682432.

It is an arithmetic number, because the mean of its divisors is an integer number (593682432).

Almost surely, 2^1187364863 is an apocalyptic number.

1187364863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187364863 is an equidigital number, since it uses as much as digits as its factorization.

1187364863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 47.

The square root of 1187364863 is about 34458.1610507584. The cubic root of 1187364863 is about 1058.9157249615.

The spelling of 1187364863 in words is "one billion, one hundred eighty-seven million, three hundred sixty-four thousand, eight hundred sixty-three".