1940520223 has 2 divisors, whose sum is σ = 1940520224. Its totient is φ = 1940520222.

The previous prime is 1940520193. The next prime is 1940520251. The reversal of 1940520223 is 3220250491.

It is an a-pointer prime, because the next prime (1940520251) can be obtained adding 1940520223 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1940520223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1940520191 and 1940520200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1940520523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970260111 + 970260112.

It is an arithmetic number, because the mean of its divisors is an integer number (970260112).

Almost surely, 2^1940520223 is an apocalyptic number.

1940520223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940520223 is an equidigital number, since it uses as much as digits as its factorization.

1940520223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1940520223 is about 44051.3362226391. The cubic root of 1940520223 is about 1247.3051754180.

The spelling of 1940520223 in words is "one billion, nine hundred forty million, five hundred twenty thousand, two hundred twenty-three".