1665414480 has 40 divisors (see below), whose sum is σ = 5162785632. Its totient is φ = 444110464.

The previous prime is 1665414473. The next prime is 1665414493. The reversal of 1665414480 is 844145661.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3469374 + ... + 3469853.

Almost surely, 2^1665414480 is an apocalyptic number.

1665414480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1665414480 is an abundant number, since it is smaller than the sum of its proper divisors (3497371152).

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

1665414480 is a wasteful number, since it uses less digits than its factorization.

1665414480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6939243 (or 6939237 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 1665414480 is about 40809.4900727760. The cubic root of 1665414480 is about 1185.3341008128.

The spelling of 1665414480 in words is "one billion, six hundred sixty-five million, four hundred fourteen thousand, four hundred eighty".