1160187981 has 8 divisors (see below), whose sum is σ = 1547327904. Its totient is φ = 773253360.

The previous prime is 1160187979. The next prime is 1160188009. The reversal of 1160187981 is 1897810611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1160187981 - 2¹ = 1160187979 is a prime.

It is a super-2 number, since 2×1160187981² = 2692072302513712722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1160187901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37615 + ... + 61116.

It is an arithmetic number, because the mean of its divisors is an integer number (193415988).

Almost surely, 2^1160187981 is an apocalyptic number.

It is an amenable number.

1160187981 is a deficient number, since it is larger than the sum of its proper divisors (387139923).

1160187981 is an equidigital number, since it uses as much as digits as its factorization.

1160187981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102651.

The product of its (nonzero) digits is 24192, while the sum is 42.

The square root of 1160187981 is about 34061.5322761616. The cubic root of 1160187981 is about 1050.7743285997.

The spelling of 1160187981 in words is "one billion, one hundred sixty million, one hundred eighty-seven thousand, nine hundred eighty-one".