7543993141 has 2 divisors, whose sum is σ = 7543993142. Its totient is φ = 7543993140.
The previous prime is 7543993109. The next prime is 7543993147. The reversal of 7543993141 is 1413993457.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 7529900625 + 14092516 = 86775^2 + 3754^2 .
It is an emirp because it is prime and its reverse (1413993457) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 7543993141 - 25 = 7543993109 is a prime.
It is a super-2 number, since 2×75439931412 (a number of 21 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 7543993091 and 7543993100.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (7543993147) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3771996570 + 3771996571.
It is an arithmetic number, because the mean of its divisors is an integer number (3771996571).
Almost surely, 27543993141 is an apocalyptic number.
It is an amenable number.
7543993141 is a deficient number, since it is larger than the sum of its proper divisors (1).
7543993141 is an equidigital number, since it uses as much as digits as its factorization.
7543993141 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 408240, while the sum is 46.
The square root of 7543993141 is about 86856.1635176226. The cubic root of 7543993141 is about 1961.2536354653.
The spelling of 7543993141 in words is "seven billion, five hundred forty-three million, nine hundred ninety-three thousand, one hundred forty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.061 sec. • engine limits •