1159753981 has 2 divisors, whose sum is σ = 1159753982. Its totient is φ = 1159753980.

The previous prime is 1159753963. The next prime is 1159754009. The reversal of 1159753981 is 1893579511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1149888100 + 9865881 = 33910^2 + 3141^2 .

It is a cyclic number.

It is not a de Polignac number, because 1159753981 - 2⁵ = 1159753949 is a prime.

It is a super-2 number, since 2×1159753981² = 2690058592890696722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1159753951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579876990 + 579876991.

It is an arithmetic number, because the mean of its divisors is an integer number (579876991).

Almost surely, 2^1159753981 is an apocalyptic number.

It is an amenable number.

1159753981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1159753981 is an equidigital number, since it uses as much as digits as its factorization.

1159753981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 49.

The square root of 1159753981 is about 34055.1608570566. The cubic root of 1159753981 is about 1050.6432886470.

The spelling of 1159753981 in words is "one billion, one hundred fifty-nine million, seven hundred fifty-three thousand, nine hundred eighty-one".