1381908294 has 48 divisors (see below), whose sum is σ = 3231446400. Its totient is φ = 424280448.

The previous prime is 1381908293. The next prime is 1381908313. The reversal of 1381908294 is 4928091831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381908293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105922 + ... + 118250.

It is an arithmetic number, because the mean of its divisors is an integer number (67321800).

Almost surely, 2^1381908294 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1381908294, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1615723200).

1381908294 is an abundant number, since it is smaller than the sum of its proper divisors (1849538106).

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

1381908294 is a wasteful number, since it uses less digits than its factorization.

1381908294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12829 (or 12826 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1381908294 is about 37174.0271426167. The cubic root of 1381908294 is about 1113.8492270272.

The spelling of 1381908294 in words is "one billion, three hundred eighty-one million, nine hundred eight thousand, two hundred ninety-four".