748538138 has 4 divisors (see below), whose sum is σ = 1122807210. Its totient is φ = 374269068.

The previous prime is 748538057. The next prime is 748538143. The reversal of 748538138 is 831835847.

It is a happy number.

748538138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 543962329 + 204575809 = 23323^2 + 14303^2 .

It is a junction number, because it is equal to n+sod(n) for n = 748538092 and 748538101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187134533 + ... + 187134536.

Almost surely, 2^748538138 is an apocalyptic number.

748538138 is a deficient number, since it is larger than the sum of its proper divisors (374269072).

748538138 is a wasteful number, since it uses less digits than its factorization.

748538138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374269071.

The product of its digits is 645120, while the sum is 47.

The square root of 748538138 is about 27359.4250305082. The cubic root of 748538138 is about 907.9696059030.

The spelling of 748538138 in words is "seven hundred forty-eight million, five hundred thirty-eight thousand, one hundred thirty-eight".