1940695213 has 4 divisors (see below), whose sum is σ = 1951417468. Its totient is φ = 1929972960.

The previous prime is 1940695193. The next prime is 1940695243. The reversal of 1940695213 is 3125960491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 655257604 + 1285437609 = 25598^2 + 35853^2 .

It is a cyclic number.

It is not a de Polignac number, because 1940695213 - 2⁵ = 1940695181 is a prime.

It is a super-2 number, since 2×1940695213² = 7532595819522230738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940695243) 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 in 3 ways as a sum of consecutive naturals, for example, 5360856 + ... + 5361217.

It is an arithmetic number, because the mean of its divisors is an integer number (487854367).

Almost surely, 2^1940695213 is an apocalyptic number.

It is an amenable number.

1940695213 is a deficient number, since it is larger than the sum of its proper divisors (10722255).

1940695213 is a wasteful number, since it uses less digits than its factorization.

1940695213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10722254.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 1940695213 is about 44053.3223832210. The cubic root of 1940695213 is about 1247.3426669747.

The spelling of 1940695213 in words is "one billion, nine hundred forty million, six hundred ninety-five thousand, two hundred thirteen".