1020415453 has 4 divisors (see below), whose sum is σ = 1020679488. Its totient is φ = 1020151420.

The previous prime is 1020415439. The next prime is 1020415471. The reversal of 1020415453 is 3545140201.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-1020415453 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 (1020415553) 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, 126133 + ... + 133978.

It is an arithmetic number, because the mean of its divisors is an integer number (255169872).

Almost surely, 2^1020415453 is an apocalyptic number.

It is an amenable number.

1020415453 is a deficient number, since it is larger than the sum of its proper divisors (264035).

1020415453 is an equidigital number, since it uses as much as digits as its factorization.

1020415453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264034.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1020415453 is about 31943.9423521894. The cubic root of 1020415453 is about 1006.7593591216.

Adding to 1020415453 its reverse (3545140201), we get a palindrome (4565555654).

The spelling of 1020415453 in words is "one billion, twenty million, four hundred fifteen thousand, four hundred fifty-three".