164493151 has 2 divisors, whose sum is σ = 164493152. Its totient is φ = 164493150.

The previous prime is 164493143. The next prime is 164493179. The reversal of 164493151 is 151394461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164493151 - 2³ = 164493143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164493181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82246575 + 82246576.

It is an arithmetic number, because the mean of its divisors is an integer number (82246576).

Almost surely, 2^164493151 is an apocalyptic number.

164493151 is a deficient number, since it is larger than the sum of its proper divisors (1).

164493151 is an equidigital number, since it uses as much as digits as its factorization.

164493151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 34.

The square root of 164493151 is about 12825.4883337829. The cubic root of 164493151 is about 547.9184693649.

It can be divided in two parts, 16449 and 3151, that added together give a square (19600 = 140²).

The spelling of 164493151 in words is "one hundred sixty-four million, four hundred ninety-three thousand, one hundred fifty-one".