1141981011 has 10 divisors (see below), whose sum is σ = 1705922372. Its totient is φ = 761320620.

The previous prime is 1141981003. The next prime is 1141981019. The reversal of 1141981011 is 1101891411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1141981003) and next prime (1141981019).

It is not a de Polignac number, because 1141981011 - 2³ = 1141981003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1141981019) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7049185 + ... + 7049346.

Almost surely, 2^1141981011 is an apocalyptic number.

1141981011 is a deficient number, since it is larger than the sum of its proper divisors (563941361).

1141981011 is an equidigital number, since it uses as much as digits as its factorization.

1141981011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14098543 (or 14098534 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 27.

The square root of 1141981011 is about 33793.2095397877. The cubic root of 1141981011 is about 1045.2486793226.

The spelling of 1141981011 in words is "one billion, one hundred forty-one million, nine hundred eighty-one thousand, eleven".