133164478 has 8 divisors (see below), whose sum is σ = 199916640. Its totient is φ = 66525600.

The previous prime is 133164469. The next prime is 133164487. The reversal of 133164478 is 874461331.

It is an interprime number because it is at equal distance from previous prime (133164469) and next prime (133164487).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25318 + ... + 30121.

It is an arithmetic number, because the mean of its divisors is an integer number (24989580).

Almost surely, 2^133164478 is an apocalyptic number.

133164478 is a deficient number, since it is larger than the sum of its proper divisors (66752162).

133164478 is a wasteful number, since it uses less digits than its factorization.

133164478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56642.

The product of its digits is 48384, while the sum is 37.

The square root of 133164478 is about 11539.6914170180. The cubic root of 133164478 is about 510.6572047692.

The spelling of 133164478 in words is "one hundred thirty-three million, one hundred sixty-four thousand, four hundred seventy-eight".