164538377 has 2 divisors, whose sum is σ = 164538378. Its totient is φ = 164538376.

The previous prime is 164538337. The next prime is 164538383. The reversal of 164538377 is 773835461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114468601 + 50069776 = 10699^2 + 7076^2 .

It is a cyclic number.

It is not a de Polignac number, because 164538377 - 2¹⁴ = 164521993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (164538337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82269188 + 82269189.

It is an arithmetic number, because the mean of its divisors is an integer number (82269189).

Almost surely, 2^164538377 is an apocalyptic number.

It is an amenable number.

164538377 is a deficient number, since it is larger than the sum of its proper divisors (1).

164538377 is an equidigital number, since it uses as much as digits as its factorization.

164538377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 44.

The square root of 164538377 is about 12827.2513423570. The cubic root of 164538377 is about 547.9686799458.

The spelling of 164538377 in words is "one hundred sixty-four million, five hundred thirty-eight thousand, three hundred seventy-seven".