1378430478 has 24 divisors (see below), whose sum is σ = 3003107016. Its totient is φ = 456937200.

The previous prime is 1378430477. The next prime is 1378430479. The reversal of 1378430478 is 8740348731.

1378430478 is a `hidden beast` number, since 137 + 8 + 43 + 0 + 478 = 666.

It is an interprime number because it is at equal distance from previous prime (1378430477) and next prime (1378430479).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378430477) 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 11 ways as a sum of consecutive naturals, for example, 208288 + ... + 214803.

It is an arithmetic number, because the mean of its divisors is an integer number (125129459).

Almost surely, 2^1378430478 is an apocalyptic number.

1378430478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1378430478 is an abundant number, since it is smaller than the sum of its proper divisors (1624676538).

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

1378430478 is a wasteful number, since it uses less digits than its factorization.

1378430478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423280 (or 423277 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 1378430478 is about 37127.2201760380. The cubic root of 1378430478 is about 1112.9140427123.

The spelling of 1378430478 in words is "one billion, three hundred seventy-eight million, four hundred thirty thousand, four hundred seventy-eight".