7123948538 has 16 divisors (see below), whose sum is σ = 12220957824. Its totient is φ = 3051002160.

The previous prime is 7123948471. The next prime is 7123948567. The reversal of 7123948538 is 8358493217.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155573 + ... + 196088.

It is an arithmetic number, because the mean of its divisors is an integer number (763809864).

Almost surely, 2^7123948538 is an apocalyptic number.

7123948538 is a deficient number, since it is larger than the sum of its proper divisors (5097009286).

7123948538 is a wasteful number, since it uses less digits than its factorization.

7123948538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353117.

The product of its digits is 1451520, while the sum is 50.

The square root of 7123948538 is about 84403.4865275126. The cubic root of 7123948538 is about 1924.1559047783.

The spelling of 7123948538 in words is "seven billion, one hundred twenty-three million, nine hundred forty-eight thousand, five hundred thirty-eight".