1385522453 has 4 divisors (see below), whose sum is σ = 1583454240. Its totient is φ = 1187590668.

The previous prime is 1385522441. The next prime is 1385522477. The reversal of 1385522453 is 3542255831.

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 1385522453 - 2¹² = 1385518357 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 (1385522053) 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, 98965883 + ... + 98965896.

It is an arithmetic number, because the mean of its divisors is an integer number (395863560).

Almost surely, 2^1385522453 is an apocalyptic number.

It is an amenable number.

1385522453 is a deficient number, since it is larger than the sum of its proper divisors (197931787).

1385522453 is an equidigital number, since it uses as much as digits as its factorization.

1385522453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197931786.

The product of its digits is 144000, while the sum is 38.

The square root of 1385522453 is about 37222.6067464384. The cubic root of 1385522453 is about 1114.8194129300.

The spelling of 1385522453 in words is "one billion, three hundred eighty-five million, five hundred twenty-two thousand, four hundred fifty-three".