1478988389 has 8 divisors (see below), whose sum is σ = 1634074560. Its totient is φ = 1331467456.

The previous prime is 1478988353. The next prime is 1478988403. The reversal of 1478988389 is 9838898741.

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

It is a cyclic number.

It is not a de Polignac number, because 1478988389 - 2¹² = 1478984293 is a prime.

It is a super-3 number, since 3×1478988389³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1478988089) 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, 1890899 + ... + 1891680.

It is an arithmetic number, because the mean of its divisors is an integer number (204259320).

Almost surely, 2^1478988389 is an apocalyptic number.

It is an amenable number.

1478988389 is a deficient number, since it is larger than the sum of its proper divisors (155086171).

1478988389 is a wasteful number, since it uses less digits than its factorization.

1478988389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3782619.

The product of its digits is 27869184, while the sum is 65.

The square root of 1478988389 is about 38457.6180879680. The cubic root of 1478988389 is about 1139.3441361814.

The spelling of 1478988389 in words is "one billion, four hundred seventy-eight million, nine hundred eighty-eight thousand, three hundred eighty-nine".