1303948393 has 6 divisors (see below), whose sum is σ = 1433265722. Its totient is φ = 1185407520.

The previous prime is 1303948369. The next prime is 1303948403. The reversal of 1303948393 is 3938493031.

It can be written as a sum of positive squares in only one way, i.e., 1229764624 + 74183769 = 35068^2 + 8613^2 .

It is not a de Polignac number, because 1303948393 - 2⁹ = 1303947881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1303949393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5388096 + ... + 5388337.

Almost surely, 2^1303948393 is an apocalyptic number.

It is an amenable number.

1303948393 is a deficient number, since it is larger than the sum of its proper divisors (129317329).

1303948393 is a wasteful number, since it uses less digits than its factorization.

1303948393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10776455 (or 10776444 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 1303948393 is about 36110.2256016215. The cubic root of 1303948393 is about 1092.4967016886.

The spelling of 1303948393 in words is "one billion, three hundred three million, nine hundred forty-eight thousand, three hundred ninety-three".