1940402533 has 2 divisors, whose sum is σ = 1940402534. Its totient is φ = 1940402532.

The previous prime is 1940402489. The next prime is 1940402549. The reversal of 1940402533 is 3352040491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1932657444 + 7745089 = 43962^2 + 2783^2 .

It is a cyclic number.

It is not a de Polignac number, because 1940402533 - 2⁹ = 1940402021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1940402495 and 1940402504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1940402573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970201266 + 970201267.

It is an arithmetic number, because the mean of its divisors is an integer number (970201267).

Almost surely, 2^1940402533 is an apocalyptic number.

It is an amenable number.

1940402533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940402533 is an equidigital number, since it uses as much as digits as its factorization.

1940402533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1940402533 is about 44050.0003745743. Note that the first 3 decimals coincide. The cubic root of 1940402533 is about 1247.2799591019.

The spelling of 1940402533 in words is "one billion, nine hundred forty million, four hundred two thousand, five hundred thirty-three".