1150981 has 16 divisors (see below), whose sum is σ = 1330560. Its totient is φ = 987840.

The previous prime is 1150973. The next prime is 1150987. The reversal of 1150981 is 1890511.

It is a cyclic number.

It is not a de Polignac number, because 1150981 - 2³ = 1150973 is a prime.

It is a super-2 number, since 2×1150981² = 2649514524722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1150987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16176 + ... + 16246.

It is an arithmetic number, because the mean of its divisors is an integer number (83160).

2^1150981 is an apocalyptic number.

It is an amenable number.

1150981 is a deficient number, since it is larger than the sum of its proper divisors (179579).

1150981 is a wasteful number, since it uses less digits than its factorization.

1150981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156.

The product of its (nonzero) digits is 360, while the sum is 25.

The square root of 1150981 is about 1072.8378255822. The cubic root of 1150981 is about 104.7987376749.

The spelling of 1150981 in words is "one million, one hundred fifty thousand, nine hundred eighty-one".