7238458081 has 4 divisors (see below), whose sum is σ = 7239698964. Its totient is φ = 7237217200.

The previous prime is 7238458079. The next prime is 7238458099. The reversal of 7238458081 is 1808548327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1808548327 = 1481 ⋅1221167.

It can be written as a sum of positive squares in 2 ways, for example, as 1238406481 + 6000051600 = 35191^2 + 77460^2 .

It is a cyclic number.

It is not a de Polignac number, because 7238458081 - 2¹ = 7238458079 is a prime.

It is a super-2 number, since 2×7238458081² (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 (7238450081) 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, 611650 + ... + 623371.

It is an arithmetic number, because the mean of its divisors is an integer number (1809924741).

Almost surely, 2^7238458081 is an apocalyptic number.

It is an amenable number.

7238458081 is a deficient number, since it is larger than the sum of its proper divisors (1240883).

7238458081 is a wasteful number, since it uses less digits than its factorization.

7238458081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240882.

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 7238458081 is about 85079.1283512002. The cubic root of 7238458081 is about 1934.4107094117.

The spelling of 7238458081 in words is "seven billion, two hundred thirty-eight million, four hundred fifty-eight thousand, eighty-one".