1478021889 has 16 divisors (see below), whose sum is σ = 1987112960. Its totient is φ = 977155920.

The previous prime is 1478021879. The next prime is 1478021891. The reversal of 1478021889 is 9881208741.

It is not a de Polignac number, because 1478021889 - 2¹³ = 1478013697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1478021879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552024 + ... + 554694.

It is an arithmetic number, because the mean of its divisors is an integer number (124194560).

Almost surely, 2^1478021889 is an apocalyptic number.

It is an amenable number.

1478021889 is a deficient number, since it is larger than the sum of its proper divisors (509091071).

1478021889 is a wasteful number, since it uses less digits than its factorization.

1478021889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4140.

The product of its (nonzero) digits is 258048, while the sum is 48.

The square root of 1478021889 is about 38445.0502535762. The cubic root of 1478021889 is about 1139.0958998258.

The spelling of 1478021889 in words is "one billion, four hundred seventy-eight million, twenty-one thousand, eight hundred eighty-nine".