1940284019 has 2 divisors, whose sum is σ = 1940284020. Its totient is φ = 1940284018.

The previous prime is 1940283949. The next prime is 1940284051. The reversal of 1940284019 is 9104820491.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1940284019 is a prime.

It is a super-2 number, since 2×1940284019² = 7529404148773584722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1940284519) 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, 970142009 + 970142010.

It is an arithmetic number, because the mean of its divisors is an integer number (970142010).

Almost surely, 2^1940284019 is an apocalyptic number.

1940284019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940284019 is an equidigital number, since it uses as much as digits as its factorization.

1940284019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1940284019 is about 44048.6551327052. The cubic root of 1940284019 is about 1247.2545652048.

The spelling of 1940284019 in words is "one billion, nine hundred forty million, two hundred eighty-four thousand, nineteen".