1393731148 has 6 divisors (see below), whose sum is σ = 2439029516. Its totient is φ = 696865572.

The previous prime is 1393731137. The next prime is 1393731169. The reversal of 1393731148 is 8411373931.

It is a self number, because there is not a number n which added to its sum of digits gives 1393731148.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174216390 + ... + 174216397.

Almost surely, 2^1393731148 is an apocalyptic number.

It is an amenable number.

1393731148 is a deficient number, since it is larger than the sum of its proper divisors (1045298368).

1393731148 is a wasteful number, since it uses less digits than its factorization.

1393731148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348432791 (or 348432789 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 1393731148 is about 37332.7088221575. The cubic root of 1393731148 is about 1117.0167066378.

The spelling of 1393731148 in words is "one billion, three hundred ninety-three million, seven hundred thirty-one thousand, one hundred forty-eight".