1445159040 has 128 divisors (see below), whose sum is σ = 4960872000. Its totient is φ = 355725312.

The previous prime is 1445159029. The next prime is 1445159077. The reversal of 1445159040 is 409515441.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 1445158992 and 1445159010.

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, 3990 + ... + 53909.

Almost surely, 2^1445159040 is an apocalyptic number.

1445159040 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 1445159040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2480436000).

1445159040 is an abundant number, since it is smaller than the sum of its proper divisors (3515712960).

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

1445159040 is a wasteful number, since it uses less digits than its factorization.

1445159040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57934 (or 57922 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 1445159040 is about 38015.2474672992. The cubic root of 1445159040 is about 1130.5901947311.

The spelling of 1445159040 in words is "one billion, four hundred forty-five million, one hundred fifty-nine thousand, forty".