1453445320 has 32 divisors (see below), whose sum is σ = 3271360320. Its totient is φ = 581181120.

The previous prime is 1453445291. The next prime is 1453445321. The reversal of 1453445320 is 235443541.

It is a super-2 number, since 2×1453445320² = 4225006596459804800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1453445321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192415 + ... + 199825.

It is an arithmetic number, because the mean of its divisors is an integer number (102230010).

Almost surely, 2^1453445320 is an apocalyptic number.

1453445320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1453445320 is an abundant number, since it is smaller than the sum of its proper divisors (1817915000).

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

1453445320 is a wasteful number, since it uses less digits than its factorization.

1453445320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12325 (or 12321 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 1453445320 is about 38124.0779560634. The cubic root of 1453445320 is about 1132.7469442504.

Adding to 1453445320 its reverse (235443541), we get a palindrome (1688888861).

The spelling of 1453445320 in words is "one billion, four hundred fifty-three million, four hundred forty-five thousand, three hundred twenty".