1113993457 has 4 divisors (see below), whose sum is σ = 1128094720. Its totient is φ = 1099892196.
The previous prime is 1113993451. The next prime is 1113993469. The reversal of 1113993457 is 7543993111.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7543993111 = 19 ⋅397052269.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-1113993457 is a prime.
It is not an unprimeable number, because it can be changed into a prime (1113993451) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7050513 + ... + 7050670.
It is an arithmetic number, because the mean of its divisors is an integer number (282023680).
Almost surely, 21113993457 is an apocalyptic number.
It is an amenable number.
1113993457 is a deficient number, since it is larger than the sum of its proper divisors (14101263).
1113993457 is an equidigital number, since it uses as much as digits as its factorization.
1113993457 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 14101262.
The product of its digits is 102060, while the sum is 43.
The square root of 1113993457 is about 33376.5405187536. The cubic root of 1113993457 is about 1036.6390072104.
The spelling of 1113993457 in words is "one billion, one hundred thirteen million, nine hundred ninety-three thousand, four hundred fifty-seven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.062 sec. • engine limits •