478133091 has 16 divisors (see below), whose sum is σ = 715362720. Its totient is φ = 315597600.

The previous prime is 478133083. The next prime is 478133093. The reversal of 478133091 is 190331874.

It is a happy number.

It is not a de Polignac number, because 478133091 - 2³ = 478133083 is a prime.

It is a super-2 number, since 2×478133091² = 457222505418428562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (478133093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84940 + ... + 90393.

It is an arithmetic number, because the mean of its divisors is an integer number (44710170).

Almost surely, 2^478133091 is an apocalyptic number.

478133091 is a deficient number, since it is larger than the sum of its proper divisors (237229629).

478133091 is a wasteful number, since it uses less digits than its factorization.

478133091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175443 (or 175437 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 478133091 is about 21866.2546175608. The cubic root of 478133091 is about 781.9571118958.

The spelling of 478133091 in words is "four hundred seventy-eight million, one hundred thirty-three thousand, ninety-one".