2690449045 has 16 divisors (see below), whose sum is σ = 3362310000. Its totient is φ = 2064176128.

The previous prime is 2690448997. The next prime is 2690449061. The reversal of 2690449045 is 5409440962.

It can be written as a sum of positive squares in 8 ways, for example, as 5447556 + 2685001489 = 2334^2 + 51817^2 .

It is a cyclic number.

It is not a de Polignac number, because 2690449045 - 2¹³ = 2690440853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2690448992 and 2690449010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40660 + ... + 83869.

It is an arithmetic number, because the mean of its divisors is an integer number (210144375).

Almost surely, 2^2690449045 is an apocalyptic number.

It is an amenable number.

2690449045 is a deficient number, since it is larger than the sum of its proper divisors (671860955).

2690449045 is a wasteful number, since it uses less digits than its factorization.

2690449045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124712.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 2690449045 is about 51869.5387004743. The cubic root of 2690449045 is about 1390.8327989066.

The spelling of 2690449045 in words is "two billion, six hundred ninety million, four hundred forty-nine thousand, forty-five".