7148661293 has 4 divisors (see below), whose sum is σ = 7228983420. Its totient is φ = 7068339168.

The previous prime is 7148661277. The next prime is 7148661301. The reversal of 7148661293 is 3921668417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3921668417 = 269 ⋅14578693.

It can be written as a sum of positive squares in 2 ways, for example, as 2471879524 + 4676781769 = 49718^2 + 68387^2 .

It is a cyclic number.

It is not a de Polignac number, because 7148661293 - 2⁴ = 7148661277 is a prime.

It is a super-2 number, since 2×7148661293² (a number of 21 digits) 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 (7148661203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40160930 + ... + 40161107.

It is an arithmetic number, because the mean of its divisors is an integer number (1807245855).

Almost surely, 2^7148661293 is an apocalyptic number.

It is an amenable number.

7148661293 is a deficient number, since it is larger than the sum of its proper divisors (80322127).

7148661293 is an equidigital number, since it uses as much as digits as its factorization.

7148661293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80322126.

The product of its digits is 435456, while the sum is 47.

The square root of 7148661293 is about 84549.7563154383. The cubic root of 7148661293 is about 1926.3782825505.

The spelling of 7148661293 in words is "seven billion, one hundred forty-eight million, six hundred sixty-one thousand, two hundred ninety-three".