1538478470 has 16 divisors (see below), whose sum is σ = 2771945280. Its totient is φ = 614794944.

The previous prime is 1538478457. The next prime is 1538478497. The reversal of 1538478470 is 748748351.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63647 + ... + 84426.

It is an arithmetic number, because the mean of its divisors is an integer number (173246580).

Almost surely, 2^1538478470 is an apocalyptic number.

1538478470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1538478470 is a deficient number, since it is larger than the sum of its proper divisors (1233466810).

1538478470 is a wasteful number, since it uses less digits than its factorization.

1538478470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149119.

The product of its (nonzero) digits is 752640, while the sum is 47.

The square root of 1538478470 is about 39223.4428626555. The cubic root of 1538478470 is about 1154.4199082227.

The spelling of 1538478470 in words is "one billion, five hundred thirty-eight million, four hundred seventy-eight thousand, four hundred seventy".