1140778973 has 2 divisors, whose sum is σ = 1140778974. Its totient is φ = 1140778972.

The previous prime is 1140778967. The next prime is 1140778979. The reversal of 1140778973 is 3798770411.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1140778967) and next prime (1140778979).

It can be written as a sum of positive squares in only one way, i.e., 832495609 + 308283364 = 28853^2 + 17558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140778973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140778979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570389486 + 570389487.

It is an arithmetic number, because the mean of its divisors is an integer number (570389487).

Almost surely, 2^1140778973 is an apocalyptic number.

It is an amenable number.

1140778973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140778973 is an equidigital number, since it uses as much as digits as its factorization.

1140778973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 296352, while the sum is 47.

The square root of 1140778973 is about 33775.4196569043. The cubic root of 1140778973 is about 1044.8818110727.

The spelling of 1140778973 in words is "one billion, one hundred forty million, seven hundred seventy-eight thousand, nine hundred seventy-three".