1381741560 has 192 divisors, whose sum is σ = 4933094400. Its totient is φ = 333856512.

The previous prime is 1381741519. The next prime is 1381741567. The reversal of 1381741560 is 651471831.

1381741560 is a `hidden beast` number, since 13 + 81 + 7 + 4 + 1 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381741567) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 152929 + ... + 161711.

It is an arithmetic number, because the mean of its divisors is an integer number (25693200).

Almost surely, 2^1381741560 is an apocalyptic number.

1381741560 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 1381741560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2466547200).

1381741560 is an abundant number, since it is smaller than the sum of its proper divisors (3551352840).

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

1381741560 is a wasteful number, since it uses less digits than its factorization.

1381741560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8842 (or 8835 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 1381741560 is about 37171.7844607977. The cubic root of 1381741560 is about 1113.8044281049.

The spelling of 1381741560 in words is "one billion, three hundred eighty-one million, seven hundred forty-one thousand, five hundred sixty".