1941947213 has 12 divisors (see below), whose sum is σ = 2129542740. Its totient is φ = 1764677376.

The previous prime is 1941947207. The next prime is 1941947219. The reversal of 1941947213 is 3127491491.

It is an interprime number because it is at equal distance from previous prime (1941947207) and next prime (1941947219).

It can be written as a sum of positive squares in 6 ways, for example, as 14122564 + 1927824649 = 3758^2 + 43907^2 .

It is not a de Polignac number, because 1941947213 - 2⁴ = 1941947197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1941947219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53618 + ... + 82211.

It is an arithmetic number, because the mean of its divisors is an integer number (177461895).

Almost surely, 2^1941947213 is an apocalyptic number.

It is an amenable number.

1941947213 is a deficient number, since it is larger than the sum of its proper divisors (187595527).

1941947213 is a wasteful number, since it uses less digits than its factorization.

1941947213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135904 (or 135875 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 1941947213 is about 44067.5301440868. The cubic root of 1941947213 is about 1247.6108418881.

The spelling of 1941947213 in words is "one billion, nine hundred forty-one million, nine hundred forty-seven thousand, two hundred thirteen".