1385342453 has 4 divisors (see below), whose sum is σ = 1511282688. Its totient is φ = 1259402220.

The previous prime is 1385342447. The next prime is 1385342473. The reversal of 1385342453 is 3542435831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1385342453 - 2²² = 1381148149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385342443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62970101 + ... + 62970122.

It is an arithmetic number, because the mean of its divisors is an integer number (377820672).

Almost surely, 2^1385342453 is an apocalyptic number.

It is an amenable number.

1385342453 is a deficient number, since it is larger than the sum of its proper divisors (125940235).

1385342453 is a wasteful number, since it uses less digits than its factorization.

1385342453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125940234.

The product of its digits is 172800, while the sum is 38.

The square root of 1385342453 is about 37220.1887824337. The cubic root of 1385342453 is about 1114.7711336246.

The spelling of 1385342453 in words is "one billion, three hundred eighty-five million, three hundred forty-two thousand, four hundred fifty-three".