1445437440 has 224 divisors, whose sum is σ = 5142951360. Its totient is φ = 385155072.

The previous prime is 1445437439. The next prime is 1445437451. The reversal of 1445437440 is 447345441.

1445437440 is a `hidden beast` number, since 1 + 4 + 4 + 543 + 74 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1445437395 and 1445437404.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1105267 + ... + 1106573.

Almost surely, 2^1445437440 is an apocalyptic number.

1445437440 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 1445437440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2571475680).

1445437440 is an abundant number, since it is smaller than the sum of its proper divisors (3697513920).

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

1445437440 is an equidigital number, since it uses as much as digits as its factorization.

1445437440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 36.

The square root of 1445437440 is about 38018.9089796117. The cubic root of 1445437440 is about 1130.6627902244.

The spelling of 1445437440 in words is "one billion, four hundred forty-five million, four hundred thirty-seven thousand, four hundred forty".