1397948503 has 32 divisors (see below), whose sum is σ = 1742336000. Its totient is φ = 1094549760.

The previous prime is 1397948477. The next prime is 1397948521. The reversal of 1397948503 is 3058497931.

It is a cyclic number.

It is not a de Polignac number, because 1397948503 - 2¹⁷ = 1397817431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397948593) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 1685893 + ... + 1686721.

It is an arithmetic number, because the mean of its divisors is an integer number (54448000).

Almost surely, 2^1397948503 is an apocalyptic number.

1397948503 is a deficient number, since it is larger than the sum of its proper divisors (344387497).

1397948503 is a wasteful number, since it uses less digits than its factorization.

1397948503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 1397948503 is about 37389.1495356607. The cubic root of 1397948503 is about 1118.1422494832.

The spelling of 1397948503 in words is "one billion, three hundred ninety-seven million, nine hundred forty-eight thousand, five hundred three".