1478469509 has 8 divisors (see below), whose sum is σ = 1683001152. Its totient is φ = 1285625440.

The previous prime is 1478469451. The next prime is 1478469527. The reversal of 1478469509 is 9059648741.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1478469509 - 2⁸ = 1478469253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1478469709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2921624 + ... + 2922129.

It is an arithmetic number, because the mean of its divisors is an integer number (210375144).

Almost surely, 2^1478469509 is an apocalyptic number.

It is an amenable number.

1478469509 is a deficient number, since it is larger than the sum of its proper divisors (204531643).

1478469509 is a wasteful number, since it uses less digits than its factorization.

1478469509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5843787.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 1478469509 is about 38450.8713685399. The cubic root of 1478469509 is about 1139.2108802255.

The spelling of 1478469509 in words is "one billion, four hundred seventy-eight million, four hundred sixty-nine thousand, five hundred nine".