2651941009 has 9 divisors (see below), whose sum is σ = 2773494633. Its totient is φ = 2535506292.

The previous prime is 2651941001. The next prime is 2651941037. The reversal of 2651941009 is 9001491562.

The square root of 2651941009 is 51497.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 2651941009 - 2³ = 2651941001 is a prime.

It is a super-2 number, since 2×2651941009² = 14065582230431876162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2651941001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1183312 + ... + 1185550.

Almost surely, 2^2651941009 is an apocalyptic number.

2651941009 is the 51497-th square number.

2651941009 is the 25749-th centered octagonal number.

It is an amenable number.

2651941009 is a deficient number, since it is larger than the sum of its proper divisors (121553624).

2651941009 is an frugal number, since it uses more digits than its factorization.

2651941009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4524 (or 2262 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The cubic root of 2651941009 is about 1384.1652855448.

It can be divided in two parts, 26519 and 41009, that added together give a triangular number (67528 = T₃₆₇).

The spelling of 2651941009 in words is "two billion, six hundred fifty-one million, nine hundred forty-one thousand, nine".