7448138141 has 4 divisors (see below), whose sum is σ = 7886263932. Its totient is φ = 7010012352.

The previous prime is 7448138101. The next prime is 7448138143. The reversal of 7448138141 is 1418318447.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6017104900 + 1431033241 = 77570^2 + 37829^2 .

It is a cyclic number.

It is not a de Polignac number, because 7448138141 - 2¹⁴ = 7448121757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7448138143) 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, 219062870 + ... + 219062903.

It is an arithmetic number, because the mean of its divisors is an integer number (1971565983).

Almost surely, 2^7448138141 is an apocalyptic number.

It is an amenable number.

7448138141 is a deficient number, since it is larger than the sum of its proper divisors (438125791).

7448138141 is a wasteful number, since it uses less digits than its factorization.

7448138141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438125790.

The product of its digits is 86016, while the sum is 41.

The square root of 7448138141 is about 86302.5963746167. The cubic root of 7448138141 is about 1952.9115516188.

The spelling of 7448138141 in words is "seven billion, four hundred forty-eight million, one hundred thirty-eight thousand, one hundred forty-one".