1141011978 has 48 divisors (see below), whose sum is σ = 2486290176. Its totient is φ = 348675840.

The previous prime is 1141011953. The next prime is 1141011979. The reversal of 1141011978 is 8791101411.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1141011979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58650 + ... + 75642.

It is an arithmetic number, because the mean of its divisors is an integer number (51797712).

Almost surely, 2^1141011978 is an apocalyptic number.

1141011978 is an abundant number, since it is smaller than the sum of its proper divisors (1345278198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1141011978 is a wasteful number, since it uses less digits than its factorization.

1141011978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17067 (or 17048 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 33.

The square root of 1141011978 is about 33778.8688087686. The cubic root of 1141011978 is about 1044.9529455397.

The spelling of 1141011978 in words is "one billion, one hundred forty-one million, eleven thousand, nine hundred seventy-eight".