2651630509 has 32 divisors (see below), whose sum is σ = 3072577536. Its totient is φ = 2264824320.

The previous prime is 2651630507. The next prime is 2651630521. The reversal of 2651630509 is 9050361562.

It is not a de Polignac number, because 2651630509 - 2¹ = 2651630507 is a prime.

It is a super-2 number, since 2×2651630509² = 14062288712519198162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651630503) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 4098024 + ... + 4098670.

It is an arithmetic number, because the mean of its divisors is an integer number (96018048).

Almost surely, 2^2651630509 is an apocalyptic number.

It is an amenable number.

2651630509 is a deficient number, since it is larger than the sum of its proper divisors (420947027).

2651630509 is a wasteful number, since it uses less digits than its factorization.

2651630509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 2651630509 is about 51493.9851730277. The cubic root of 2651630509 is about 1384.1112622094. Note that the first 3 decimals are identical.

The spelling of 2651630509 in words is "two billion, six hundred fifty-one million, six hundred thirty thousand, five hundred nine".