1381018008 has 32 divisors (see below), whose sum is σ = 3563919360. Its totient is φ = 445489440.

The previous prime is 1381017943. The next prime is 1381018099. The reversal of 1381018008 is 8008101831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 927360 + ... + 928847.

It is an arithmetic number, because the mean of its divisors is an integer number (111372480).

Almost surely, 2^1381018008 is an apocalyptic number.

It is an amenable number.

1381018008 is an abundant number, since it is smaller than the sum of its proper divisors (2182901352).

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

1381018008 is a wasteful number, since it uses less digits than its factorization.

1381018008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856247 (or 1856243 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 30.

The square root of 1381018008 is about 37162.0506430956. The cubic root of 1381018008 is about 1113.6099787820.

Adding to 1381018008 its reverse (8008101831), we get a palindrome (9389119839).

The spelling of 1381018008 in words is "one billion, three hundred eighty-one million, eighteen thousand, eight".