1445331000 has 256 divisors, whose sum is σ = 4801680000. Its totient is φ = 361267200.

The previous prime is 1445330987. The next prime is 1445331031. The reversal of 1445331000 is 1335441.

It is a super-2 number, since 2×1445331000² = 4177963399122000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3218776 + ... + 3219224.

Almost surely, 2^1445331000 is an apocalyptic number.

1445331000 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 1445331000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2400840000).

1445331000 is an abundant number, since it is smaller than the sum of its proper divisors (3356349000).

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

1445331000 is a wasteful number, since it uses less digits than its factorization.

1445331000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1445331000 is about 38017.5091240865. The cubic root of 1445331000 is about 1130.6350360654.

Adding to 1445331000 its reverse (1335441), we get a palindrome (1446666441).

The spelling of 1445331000 in words is "one billion, four hundred forty-five million, three hundred thirty-one thousand".