1397451603 has 4 divisors (see below), whose sum is σ = 1863268808. Its totient is φ = 931634400.

The previous prime is 1397451599. The next prime is 1397451659. The reversal of 1397451603 is 3061547931.

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

It is not a de Polignac number, because 1397451603 - 2² = 1397451599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1397451673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232908598 + ... + 232908603.

It is an arithmetic number, because the mean of its divisors is an integer number (465817202).

Almost surely, 2^1397451603 is an apocalyptic number.

1397451603 is a deficient number, since it is larger than the sum of its proper divisors (465817205).

1397451603 is an equidigital number, since it uses as much as digits as its factorization.

1397451603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465817204.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 1397451603 is about 37382.5039691030. The cubic root of 1397451603 is about 1118.0097527746.

The spelling of 1397451603 in words is "one billion, three hundred ninety-seven million, four hundred fifty-one thousand, six hundred three".