7148818979 has 4 divisors (see below), whose sum is σ = 7162864320. Its totient is φ = 7134773640.

The previous prime is 7148818931. The next prime is 7148818987. The reversal of 7148818979 is 9798188417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9798188417 = 89231 ⋅109807.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7148818979 is a prime.

It is a super-2 number, since 2×7148818979² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7148818379) 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, 7021907 + ... + 7022924.

It is an arithmetic number, because the mean of its divisors is an integer number (1790716080).

Almost surely, 2^7148818979 is an apocalyptic number.

7148818979 is a deficient number, since it is larger than the sum of its proper divisors (14045341).

7148818979 is a wasteful number, since it uses less digits than its factorization.

7148818979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14045340.

The product of its digits is 8128512, while the sum is 62.

The square root of 7148818979 is about 84550.6888144621. The cubic root of 7148818979 is about 1926.3924465383.

The spelling of 7148818979 in words is "seven billion, one hundred forty-eight million, eight hundred eighteen thousand, nine hundred seventy-nine".