164381507 has 2 divisors, whose sum is σ = 164381508. Its totient is φ = 164381506.

The previous prime is 164381453. The next prime is 164381537. The reversal of 164381507 is 705183461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164381507 - 2²⁴ = 147604291 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (164381537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82190753 + 82190754.

It is an arithmetic number, because the mean of its divisors is an integer number (82190754).

Almost surely, 2^164381507 is an apocalyptic number.

164381507 is a deficient number, since it is larger than the sum of its proper divisors (1).

164381507 is an equidigital number, since it uses as much as digits as its factorization.

164381507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 164381507 is about 12821.1351681511. The cubic root of 164381507 is about 547.7944811140.

The spelling of 164381507 in words is "one hundred sixty-four million, three hundred eighty-one thousand, five hundred seven".