1378825692 has 24 divisors (see below), whose sum is σ = 3220928256. Its totient is φ = 459084528.

The previous prime is 1378825663. The next prime is 1378825729. The reversal of 1378825692 is 2965288731.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 54468 + ... + 75659.

It is an arithmetic number, because the mean of its divisors is an integer number (134205344).

Almost surely, 2^1378825692 is an apocalyptic number.

1378825692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1378825692 is an abundant number, since it is smaller than the sum of its proper divisors (1842102564).

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

1378825692 is a wasteful number, since it uses less digits than its factorization.

1378825692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131017 (or 131015 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 1378825692 is about 37132.5422237692. The cubic root of 1378825692 is about 1113.0203948735.

The spelling of 1378825692 in words is "one billion, three hundred seventy-eight million, eight hundred twenty-five thousand, six hundred ninety-two".