7213893541 has 2 divisors, whose sum is σ = 7213893542. Its totient is φ = 7213893540.

The previous prime is 7213893493. The next prime is 7213893563. The reversal of 7213893541 is 1453983127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5646921316 + 1566972225 = 75146^2 + 39585^2 .

It is a cyclic number.

It is not a de Polignac number, because 7213893541 - 2⁷ = 7213893413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7213893041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3606946770 + 3606946771.

It is an arithmetic number, because the mean of its divisors is an integer number (3606946771).

Almost surely, 2^7213893541 is an apocalyptic number.

It is an amenable number.

7213893541 is a deficient number, since it is larger than the sum of its proper divisors (1).

7213893541 is an equidigital number, since it uses as much as digits as its factorization.

7213893541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 7213893541 is about 84934.6427613609. The cubic root of 7213893541 is about 1932.2200143408.

The spelling of 7213893541 in words is "seven billion, two hundred thirteen million, eight hundred ninety-three thousand, five hundred forty-one".