7148813 has 4 divisors (see below), whose sum is σ = 8170080. Its totient is φ = 6127548.

The previous prime is 7148809. The next prime is 7148821. The reversal of 7148813 is 3188417.

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.

It is not a de Polignac number, because 7148813 - 2² = 7148809 is a prime.

It is a super-2 number, since 2×7148813² = 102211054617938, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7148813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7148893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510623 + ... + 510636.

It is an arithmetic number, because the mean of its divisors is an integer number (2042520).

Almost surely, 2^7148813 is an apocalyptic number.

It is an amenable number.

7148813 is a deficient number, since it is larger than the sum of its proper divisors (1021267).

7148813 is a wasteful number, since it uses less digits than its factorization.

7148813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021266.

The product of its digits is 5376, while the sum is 32.

The square root of 7148813 is about 2673.7264257960. The cubic root of 7148813 is about 192.6391909484.

It can be divided in two parts, 71 and 48813, that added together give a palindrome (48884).

The spelling of 7148813 in words is "seven million, one hundred forty-eight thousand, eight hundred thirteen".