981101159 has 2 divisors, whose sum is σ = 981101160. Its totient is φ = 981101158.

The previous prime is 981101141. The next prime is 981101183. The reversal of 981101159 is 951101189.

It is a weak prime.

It is an emirp because it is prime and its reverse (951101189) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 981101159 - 2²⁰ = 980052583 is a prime.

It is a super-2 number, since 2×981101159² = 1925118968382286562, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981101129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490550579 + 490550580.

It is an arithmetic number, because the mean of its divisors is an integer number (490550580).

Almost surely, 2^981101159 is an apocalyptic number.

981101159 is a deficient number, since it is larger than the sum of its proper divisors (1).

981101159 is an equidigital number, since it uses as much as digits as its factorization.

981101159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 35.

The square root of 981101159 is about 31322.5343642560. The cubic root of 981101159 is about 993.6602792091.

The spelling of 981101159 in words is "nine hundred eighty-one million, one hundred one thousand, one hundred fifty-nine".