1158961963 has 2 divisors, whose sum is σ = 1158961964. Its totient is φ = 1158961962.

The previous prime is 1158961949. The next prime is 1158961967. The reversal of 1158961963 is 3691698511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1158961963 - 2¹³ = 1158953771 is a prime.

It is not a weakly prime, because it can be changed into another prime (1158961967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579480981 + 579480982.

It is an arithmetic number, because the mean of its divisors is an integer number (579480982).

Almost surely, 2^1158961963 is an apocalyptic number.

1158961963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158961963 is an equidigital number, since it uses as much as digits as its factorization.

1158961963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 49.

The square root of 1158961963 is about 34043.5304132812. The cubic root of 1158961963 is about 1050.4040661029.

The spelling of 1158961963 in words is "one billion, one hundred fifty-eight million, nine hundred sixty-one thousand, nine hundred sixty-three".