1445320454 has 4 divisors (see below), whose sum is σ = 2167980684. Its totient is φ = 722660226.

The previous prime is 1445320439. The next prime is 1445320507. The reversal of 1445320454 is 4540235441.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1445320454² = 4177902429501532232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1445320454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361330112 + ... + 361330115.

It is an arithmetic number, because the mean of its divisors is an integer number (541995171).

Almost surely, 2^1445320454 is an apocalyptic number.

1445320454 is a deficient number, since it is larger than the sum of its proper divisors (722660230).

1445320454 is an equidigital number, since it uses as much as digits as its factorization.

1445320454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722660229.

The product of its (nonzero) digits is 38400, while the sum is 32.

The square root of 1445320454 is about 38017.3704245835. The cubic root of 1445320454 is about 1130.6322861288.

Adding to 1445320454 its reverse (4540235441), we get a palindrome (5985555895).

The spelling of 1445320454 in words is "one billion, four hundred forty-five million, three hundred twenty thousand, four hundred fifty-four".