1381618163600 has 30 divisors (see below), whose sum is σ = 3319337639010. Its totient is φ = 552647265280.

The previous prime is 1381618163591. The next prime is 1381618163657. The reversal of 1381618163600 is 63618161831.

It can be written as a sum of positive squares in 3 ways, for example, as 4806926224 + 1376811237376 = 69332^2 + 1173376^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1727022305 + ... + 1727023104.

It is an arithmetic number, because the mean of its divisors is an integer number (110644587967).

Almost surely, 2^{1381618163600} is an apocalyptic number.

1381618163600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1381618163600 is an abundant number, since it is smaller than the sum of its proper divisors (1937719475410).

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

1381618163600 is a wasteful number, since it uses less digits than its factorization.

1381618163600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3454045427 (or 3454045416 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 1381618163600 in words is "one trillion, three hundred eighty-one billion, six hundred eighteen million, one hundred sixty-three thousand, six hundred".