1378575908 has 6 divisors (see below), whose sum is σ = 2412507846. Its totient is φ = 689287952.

The previous prime is 1378575889. The next prime is 1378575937. The reversal of 1378575908 is 8095758731.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1151109184 + 227466724 = 33928^2 + 15082^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1378575908.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 172321985 + ... + 172321992.

It is an arithmetic number, because the mean of its divisors is an integer number (402084641).

Almost surely, 2^1378575908 is an apocalyptic number.

It is an amenable number.

1378575908 is a deficient number, since it is larger than the sum of its proper divisors (1033931938).

1378575908 is a wasteful number, since it uses less digits than its factorization.

1378575908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344643981 (or 344643979 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 53.

The square root of 1378575908 is about 37129.1786604552. The cubic root of 1378575908 is about 1112.9531803160.

The spelling of 1378575908 in words is "one billion, three hundred seventy-eight million, five hundred seventy-five thousand, nine hundred eight".