1478649771 has 6 divisors (see below), whose sum is σ = 2135827460. Its totient is φ = 985766508.

The previous prime is 1478649761. The next prime is 1478649791. The reversal of 1478649771 is 1779468741.

It is a happy number.

1478649771 is a `hidden beast` number, since 1 + 4 + 7 + 86 + 497 + 71 = 666.

It is not a de Polignac number, because 1478649771 - 2⁹ = 1478649259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1478649761) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82147201 + ... + 82147218.

Almost surely, 2^1478649771 is an apocalyptic number.

1478649771 is a deficient number, since it is larger than the sum of its proper divisors (657177689).

1478649771 is a wasteful number, since it uses less digits than its factorization.

1478649771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164294425 (or 164294422 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 54.

The square root of 1478649771 is about 38453.2153532055. The cubic root of 1478649771 is about 1139.2571776714.

It can be divided in two parts, 1478 and 649771, that added together give a square (651249 = 807²).

The spelling of 1478649771 in words is "one billion, four hundred seventy-eight million, six hundred forty-nine thousand, seven hundred seventy-one".