1940590117 has 2 divisors, whose sum is σ = 1940590118. Its totient is φ = 1940590116.

The previous prime is 1940590073. The next prime is 1940590121. The reversal of 1940590117 is 7110950491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1905235201 + 35354916 = 43649^2 + 5946^2 .

It is an emirp because it is prime and its reverse (7110950491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1940590117 - 2¹⁵ = 1940557349 is a prime.

It is a super-3 number, since 3×1940590117³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1940593117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970295058 + 970295059.

It is an arithmetic number, because the mean of its divisors is an integer number (970295059).

Almost surely, 2^1940590117 is an apocalyptic number.

It is an amenable number.

1940590117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940590117 is an equidigital number, since it uses as much as digits as its factorization.

1940590117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 37.

The square root of 1940590117 is about 44052.1295398985. The cubic root of 1940590117 is about 1247.3201504575.

The spelling of 1940590117 in words is "one billion, nine hundred forty million, five hundred ninety thousand, one hundred seventeen".