1478390794 has 4 divisors (see below), whose sum is σ = 2217586194. Its totient is φ = 739195396.

The previous prime is 1478390777. The next prime is 1478390807. The reversal of 1478390794 is 4970938741.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1268285769 + 210105025 = 35613^2 + 14495^2 .

It is a super-4 number, since 4×1478390794⁴ (a number of 38 digits) contains 4444 as substring.

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, 369597697 + ... + 369597700.

Almost surely, 2^1478390794 is an apocalyptic number.

1478390794 is a deficient number, since it is larger than the sum of its proper divisors (739195400).

1478390794 is an equidigital number, since it uses as much as digits as its factorization.

1478390794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739195399.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 1478390794 is about 38449.8477760316. The cubic root of 1478390794 is about 1139.1906623413.

The spelling of 1478390794 in words is "one billion, four hundred seventy-eight million, three hundred ninety thousand, seven hundred ninety-four".