1371668580 has 240 divisors, whose sum is σ = 4449392640. Its totient is φ = 353590272.

The previous prime is 1371668533. The next prime is 1371668581. The reversal of 1371668580 is 858661731.

1371668580 is a `hidden beast` number, since 1 + 3 + 7 + 1 + 6 + 68 + 580 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1371668581) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 10800477 + ... + 10800603.

It is an arithmetic number, because the mean of its divisors is an integer number (18539136).

Almost surely, 2^1371668580 is an apocalyptic number.

1371668580 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 1371668580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2224696320).

1371668580 is an abundant number, since it is smaller than the sum of its proper divisors (3077724060).

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

1371668580 is a wasteful number, since it uses less digits than its factorization.

1371668580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1371668580 is about 37036.0443352149. The cubic root of 1371668580 is about 1111.0912569860.

The spelling of 1371668580 in words is "one billion, three hundred seventy-one million, six hundred sixty-eight thousand, five hundred eighty".