1163870971 has 2 divisors, whose sum is σ = 1163870972. Its totient is φ = 1163870970.

The previous prime is 1163870947. The next prime is 1163870989. The reversal of 1163870971 is 1790783611.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1163870971 - 2¹⁹ = 1163346683 is a prime.

It is not a weakly prime, because it can be changed into another prime (1163870921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581935485 + 581935486.

It is an arithmetic number, because the mean of its divisors is an integer number (581935486).

Almost surely, 2^1163870971 is an apocalyptic number.

1163870971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163870971 is an equidigital number, since it uses as much as digits as its factorization.

1163870971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 1163870971 is about 34115.5532125745. The cubic root of 1163870971 is about 1051.8850404121.

The spelling of 1163870971 in words is "one billion, one hundred sixty-three million, eight hundred seventy thousand, nine hundred seventy-one".