1445553340 has 96 divisors (see below), whose sum is σ = 3802176000. Its totient is φ = 448485120.

The previous prime is 1445553331. The next prime is 1445553353. The reversal of 1445553340 is 433555441.

It is a junction number, because it is equal to n+sod(n) for n = 1445553296 and 1445553305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 350611 + ... + 354709.

It is an arithmetic number, because the mean of its divisors is an integer number (39606000).

Almost surely, 2^1445553340 is an apocalyptic number.

1445553340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1445553340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1901088000).

1445553340 is an abundant number, since it is smaller than the sum of its proper divisors (2356622660).

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

1445553340 is a wasteful number, since it uses less digits than its factorization.

1445553340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4355 (or 4353 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

The square root of 1445553340 is about 38020.4331905885. The cubic root of 1445553340 is about 1130.6930095226.

The spelling of 1445553340 in words is "one billion, four hundred forty-five million, five hundred fifty-three thousand, three hundred forty".