164890351 has 2 divisors, whose sum is σ = 164890352. Its totient is φ = 164890350.

The previous prime is 164890273. The next prime is 164890357. The reversal of 164890351 is 153098461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164890351 - 2⁷ = 164890223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164890351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164890357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82445175 + 82445176.

It is an arithmetic number, because the mean of its divisors is an integer number (82445176).

Almost surely, 2^164890351 is an apocalyptic number.

164890351 is a deficient number, since it is larger than the sum of its proper divisors (1).

164890351 is an equidigital number, since it uses as much as digits as its factorization.

164890351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 164890351 is about 12840.9637878159. The cubic root of 164890351 is about 548.3591326530.

The spelling of 164890351 in words is "one hundred sixty-four million, eight hundred ninety thousand, three hundred fifty-one".