1381208066 has 8 divisors (see below), whose sum is σ = 2367785280. Its totient is φ = 591946308.

The previous prime is 1381208053. The next prime is 1381208077. The reversal of 1381208066 is 6608021831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49328846 + ... + 49328873.

It is an arithmetic number, because the mean of its divisors is an integer number (295973160).

Almost surely, 2^1381208066 is an apocalyptic number.

1381208066 is a deficient number, since it is larger than the sum of its proper divisors (986577214).

1381208066 is an equidigital number, since it uses as much as digits as its factorization.

1381208066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98657728.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 1381208066 is about 37164.6077067955. The cubic root of 1381208066 is about 1113.6610620592.

Adding to 1381208066 its reverse (6608021831), we get a palindrome (7989229897).

The spelling of 1381208066 in words is "one billion, three hundred eighty-one million, two hundred eight thousand, sixty-six".