1453531020 has 24 divisors (see below), whose sum is σ = 4069887024. Its totient is φ = 387608256.

The previous prime is 1453531003. The next prime is 1453531043. The reversal of 1453531020 is 201353541.

1453531020 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1453531020² = 4225504852204480800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12112699 + ... + 12112818.

It is an arithmetic number, because the mean of its divisors is an integer number (169578626).

Almost surely, 2^1453531020 is an apocalyptic number.

1453531020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1453531020 is an abundant number, since it is smaller than the sum of its proper divisors (2616356004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1453531020 is a wasteful number, since it uses less digits than its factorization.

1453531020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24225529 (or 24225527 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1453531020 is about 38125.2019011047. The cubic root of 1453531020 is about 1132.7692073297.

Adding to 1453531020 its reverse (201353541), we get a palindrome (1654884561).

The spelling of 1453531020 in words is "one billion, four hundred fifty-three million, five hundred thirty-one thousand, twenty".