208162045 has 24 divisors (see below), whose sum is σ = 312934104. Its totient is φ = 131757696.

The previous prime is 208162039. The next prime is 208162051. The reversal of 208162045 is 540261802.

It is an interprime number because it is at equal distance from previous prime (208162039) and next prime (208162051).

It can be written as a sum of positive squares in 4 ways, for example, as 32387481 + 175774564 = 5691^2 + 13258^2 .

It is not a de Polignac number, because 208162045 - 2⁹ = 208161533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29494 + ... + 35863.

It is an arithmetic number, because the mean of its divisors is an integer number (13038921).

Almost surely, 2^208162045 is an apocalyptic number.

It is an amenable number.

208162045 is a deficient number, since it is larger than the sum of its proper divisors (104772059).

208162045 is a wasteful number, since it uses less digits than its factorization.

208162045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65389 (or 65382 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 208162045 is about 14427.8219076893. The cubic root of 208162045 is about 592.6530383816.

The spelling of 208162045 in words is "two hundred eight million, one hundred sixty-two thousand, forty-five".