1942995121 has 2 divisors, whose sum is σ = 1942995122. Its totient is φ = 1942995120.

The previous prime is 1942995113. The next prime is 1942995133. The reversal of 1942995121 is 1215992491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1866240000 + 76755121 = 43200^2 + 8761^2 .

It is a cyclic number.

It is not a de Polignac number, because 1942995121 - 2³ = 1942995113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1942995221) 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, 971497560 + 971497561.

It is an arithmetic number, because the mean of its divisors is an integer number (971497561).

Almost surely, 2^1942995121 is an apocalyptic number.

It is an amenable number.

1942995121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1942995121 is an equidigital number, since it uses as much as digits as its factorization.

1942995121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 43.

The square root of 1942995121 is about 44079.4183378139. The cubic root of 1942995121 is about 1247.8352122662.

The spelling of 1942995121 in words is "one billion, nine hundred forty-two million, nine hundred ninety-five thousand, one hundred twenty-one".