1248693938 has 4 divisors (see below), whose sum is σ = 1873040910. Its totient is φ = 624346968.

The previous prime is 1248693917. The next prime is 1248693947. The reversal of 1248693938 is 8393968421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8393968421 = 107 ⋅78448303.

It can be written as a sum of positive squares in only one way, i.e., 1181503129 + 67190809 = 34373^2 + 8197^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1248693938.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312173483 + ... + 312173486.

Almost surely, 2^1248693938 is an apocalyptic number.

1248693938 is a deficient number, since it is larger than the sum of its proper divisors (624346972).

1248693938 is an equidigital number, since it uses as much as digits as its factorization.

1248693938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624346971.

The product of its digits is 2239488, while the sum is 53.

The square root of 1248693938 is about 35336.8637261430. The cubic root of 1248693938 is about 1076.8420375683.

The spelling of 1248693938 in words is "one billion, two hundred forty-eight million, six hundred ninety-three thousand, nine hundred thirty-eight".