290349605285 has 16 divisors (see below), whose sum is σ = 350133030000. Its totient is φ = 231138593280.

The previous prime is 290349605219. The next prime is 290349605303. The reversal of 290349605285 is 582506943092.

It can be written as a sum of positive squares in 8 ways, for example, as 11615235076 + 278734370209 = 107774^2 + 527953^2 .

It is not a de Polignac number, because 290349605285 - 2¹⁶ = 290349539749 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1811591 + ... + 1965339.

It is an arithmetic number, because the mean of its divisors is an integer number (21883314375).

Almost surely, 2^290349605285 is an apocalyptic number.

It is an amenable number.

290349605285 is a deficient number, since it is larger than the sum of its proper divisors (59783424715).

290349605285 is a wasteful number, since it uses less digits than its factorization.

290349605285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155608.

The product of its (nonzero) digits is 4665600, while the sum is 53.

The spelling of 290349605285 in words is "two hundred ninety billion, three hundred forty-nine million, six hundred five thousand, two hundred eighty-five".