1671338560 has 28 divisors (see below), whose sum is σ = 3979875708. Its totient is φ = 668535296.

The previous prime is 1671338551. The next prime is 1671338563. The reversal of 1671338560 is 658331761.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 407393856 + 1263944704 = 20184^2 + 35552^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (1671338563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2611147 + ... + 2611786.

Almost surely, 2^1671338560 is an apocalyptic number.

1671338560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1671338560 is an abundant number, since it is smaller than the sum of its proper divisors (2308537148).

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

1671338560 is an equidigital number, since it uses as much as digits as its factorization.

1671338560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5222950 (or 5222940 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 1671338560 is about 40882.0077784837. The cubic root of 1671338560 is about 1186.7378963822.

The spelling of 1671338560 in words is "one billion, six hundred seventy-one million, three hundred thirty-eight thousand, five hundred sixty".