1445431120 has 160 divisors (see below), whose sum is σ = 4097952000. Its totient is φ = 462839808.

The previous prime is 1445431109. The next prime is 1445431121. The reversal of 1445431120 is 211345441.

It is a super-2 number, since 2×1445431120² = 4178542245328908800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445431121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1417971 + ... + 1418989.

It is an arithmetic number, because the mean of its divisors is an integer number (25612200).

Almost surely, 2^1445431120 is an apocalyptic number.

1445431120 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 1445431120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2048976000).

1445431120 is an abundant number, since it is smaller than the sum of its proper divisors (2652520880).

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

1445431120 is a wasteful number, since it uses less digits than its factorization.

1445431120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205 (or 1199 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1445431120 is about 38018.8258629853. The cubic root of 1445431120 is about 1130.6611423267.

Adding to 1445431120 its reverse (211345441), we get a palindrome (1656776561).

The spelling of 1445431120 in words is "one billion, four hundred forty-five million, four hundred thirty-one thousand, one hundred twenty".