2590998649 has 8 divisors (see below), whose sum is σ = 2745718920. Its totient is φ = 2440636800.

The previous prime is 2590998647. The next prime is 2590998661. The reversal of 2590998649 is 9468990952.

It is a happy number.

2590998649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 291316624 + 2299682025 = 17068^2 + 47955^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2590998649 - 2¹ = 2590998647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2590998643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1088382 + ... + 1090759.

It is an arithmetic number, because the mean of its divisors is an integer number (343214865).

Almost surely, 2^2590998649 is an apocalyptic number.

2590998649 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2590998649 is a deficient number, since it is larger than the sum of its proper divisors (154720271).

2590998649 is a wasteful number, since it uses less digits than its factorization.

2590998649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179211.

The product of its (nonzero) digits is 12597120, while the sum is 61.

The square root of 2590998649 is about 50901.8530998627. The cubic root of 2590998649 is about 1373.4801761886.

The spelling of 2590998649 in words is "two billion, five hundred ninety million, nine hundred ninety-eight thousand, six hundred forty-nine".