1940387093 has 2 divisors, whose sum is σ = 1940387094. Its totient is φ = 1940387092.

The previous prime is 1940387051. The next prime is 1940387117. The reversal of 1940387093 is 3907830491.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1729062724 + 211324369 = 41582^2 + 14537^2 .

It is a cyclic number.

It is not a de Polignac number, because 1940387093 - 2¹⁴ = 1940370709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1940387023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970193546 + 970193547.

It is an arithmetic number, because the mean of its divisors is an integer number (970193547).

Almost surely, 2^1940387093 is an apocalyptic number.

It is an amenable number.

1940387093 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940387093 is an equidigital number, since it uses as much as digits as its factorization.

1940387093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1940387093 is about 44049.8251188356. The cubic root of 1940387093 is about 1247.2766508444.

The spelling of 1940387093 in words is "one billion, nine hundred forty million, three hundred eighty-seven thousand, ninety-three".