1465889880 has 384 divisors, whose sum is σ = 5589319680. Its totient is φ = 304819200.

The previous prime is 1465889857. The next prime is 1465889911. The reversal of 1465889880 is 889885641.

It is a self number, because there is not a number n which added to its sum of digits gives 1465889880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9707805 + ... + 9707955.

It is an arithmetic number, because the mean of its divisors is an integer number (14555520).

Almost surely, 2^1465889880 is an apocalyptic number.

1465889880 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 1465889880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2794659840).

1465889880 is an abundant number, since it is smaller than the sum of its proper divisors (4123429800).

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

1465889880 is a wasteful number, since it uses less digits than its factorization.

1465889880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 57.

The square root of 1465889880 is about 38286.9413769238. The cubic root of 1465889880 is about 1135.9706627185.

The spelling of 1465889880 in words is "one billion, four hundred sixty-five million, eight hundred eighty-nine thousand, eight hundred eighty".