1140199961 has 2 divisors, whose sum is σ = 1140199962. Its totient is φ = 1140199960.

The previous prime is 1140199939. The next prime is 1140200011. The reversal of 1140199961 is 1699910411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 632824336 + 507375625 = 25156^2 + 22525^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140199961 - 2¹⁸ = 1139937817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1140196961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570099980 + 570099981.

It is an arithmetic number, because the mean of its divisors is an integer number (570099981).

Almost surely, 2^1140199961 is an apocalyptic number.

It is an amenable number.

1140199961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140199961 is an equidigital number, since it uses as much as digits as its factorization.

1140199961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 41.

The square root of 1140199961 is about 33766.8470692779. The cubic root of 1140199961 is about 1044.7050016270.

The spelling of 1140199961 in words is "one billion, one hundred forty million, one hundred ninety-nine thousand, nine hundred sixty-one".