1378246892 has 24 divisors (see below), whose sum is σ = 2702315280. Its totient is φ = 609543360.

The previous prime is 1378246889. The next prime is 1378246897. The reversal of 1378246892 is 2986428731.

It is a self number, because there is not a number n which added to its sum of digits gives 1378246892.

It is not an unprimeable number, because it can be changed into a prime (1378246897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421667 + ... + 424922.

It is an arithmetic number, because the mean of its divisors is an integer number (112596470).

Almost surely, 2^1378246892 is an apocalyptic number.

It is an amenable number.

1378246892 is a deficient number, since it is larger than the sum of its proper divisors (1324068388).

1378246892 is a wasteful number, since it uses less digits than its factorization.

1378246892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846641 (or 846639 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 1378246892 is about 37124.7477028464. The cubic root of 1378246892 is about 1112.8646327706.

The spelling of 1378246892 in words is "one billion, three hundred seventy-eight million, two hundred forty-six thousand, eight hundred ninety-two".