208159045 has 4 divisors (see below), whose sum is σ = 249790860. Its totient is φ = 166527232.

The previous prime is 208159031. The next prime is 208159057. The reversal of 208159045 is 540951802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42419169 + 165739876 = 6513^2 + 12874^2 .

It is a cyclic number.

It is not a de Polignac number, because 208159045 - 2¹³ = 208150853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 208159045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20815900 + ... + 20815909.

It is an arithmetic number, because the mean of its divisors is an integer number (62447715).

Almost surely, 2^208159045 is an apocalyptic number.

It is an amenable number.

208159045 is a deficient number, since it is larger than the sum of its proper divisors (41631815).

208159045 is an equidigital number, since it uses as much as digits as its factorization.

208159045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41631814.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 208159045 is about 14427.7179415180. The cubic root of 208159045 is about 592.6501912925.

The spelling of 208159045 in words is "two hundred eight million, one hundred fifty-nine thousand, forty-five".