1011972041 has 2 divisors, whose sum is σ = 1011972042. Its totient is φ = 1011972040.

The previous prime is 1011972037. The next prime is 1011972061. The reversal of 1011972041 is 1402791101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 701190400 + 310781641 = 26480^2 + 17629^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011972041 - 2² = 1011972037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011972041.

It is not a weakly prime, because it can be changed into another prime (1011972001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505986020 + 505986021.

It is an arithmetic number, because the mean of its divisors is an integer number (505986021).

Almost surely, 2^1011972041 is an apocalyptic number.

It is an amenable number.

1011972041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011972041 is an equidigital number, since it uses as much as digits as its factorization.

1011972041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 1011972041 is about 31811.5079963211. The cubic root of 1011972041 is about 1003.9748598886.

The spelling of 1011972041 in words is "one billion, eleven million, nine hundred seventy-two thousand, forty-one".