2251740309 has 16 divisors (see below), whose sum is σ = 3695164032. Its totient is φ = 1187731008.

The previous prime is 2251740301. The next prime is 2251740349. The reversal of 2251740309 is 9030471522.

It is not a de Polignac number, because 2251740309 - 2³ = 2251740301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2251740309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251740301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4123794 + ... + 4124339.

It is an arithmetic number, because the mean of its divisors is an integer number (230947752).

Almost surely, 2^2251740309 is an apocalyptic number.

It is an amenable number.

2251740309 is a deficient number, since it is larger than the sum of its proper divisors (1443423723).

2251740309 is a wasteful number, since it uses less digits than its factorization.

2251740309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8248156.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 2251740309 is about 47452.5058242449. The cubic root of 2251740309 is about 1310.7084544698.

It can be divided in two parts, 22517 and 40309, that added together give a palindrome (62826).

The spelling of 2251740309 in words is "two billion, two hundred fifty-one million, seven hundred forty thousand, three hundred nine".