1378348974 has 24 divisors (see below), whose sum is σ = 3097032120. Its totient is φ = 459449496.

The previous prime is 1378348969. The next prime is 1378348981. The reversal of 1378348974 is 4798438731.

1378348974 is a `hidden beast` number, since 13 + 7 + 83 + 489 + 74 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1378348974.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1417569 + ... + 1418540.

It is an arithmetic number, because the mean of its divisors is an integer number (129043005).

Almost surely, 2^1378348974 is an apocalyptic number.

1378348974 is an abundant number, since it is smaller than the sum of its proper divisors (1718683146).

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

1378348974 is an equidigital number, since it uses as much as digits as its factorization.

1378348974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836126 (or 2836114 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 1378348974 is about 37126.1225284839. The cubic root of 1378348974 is about 1112.8921074423.

The spelling of 1378348974 in words is "one billion, three hundred seventy-eight million, three hundred forty-eight thousand, nine hundred seventy-four".