2451640289 has 16 divisors (see below), whose sum is σ = 2820574848. Its totient is φ = 2087430912.

The previous prime is 2451640267. The next prime is 2451640291. The reversal of 2451640289 is 9820461542.

It is not a de Polignac number, because 2451640289 - 2¹² = 2451636193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2451640229) 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 15 ways as a sum of consecutive naturals, for example, 689414 + ... + 692960.

It is an arithmetic number, because the mean of its divisors is an integer number (176285928).

Almost surely, 2^2451640289 is an apocalyptic number.

It is an amenable number.

2451640289 is a deficient number, since it is larger than the sum of its proper divisors (368934559).

2451640289 is a wasteful number, since it uses less digits than its factorization.

2451640289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4184.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 2451640289 is about 49514.0413317273. The cubic root of 2451640289 is about 1348.4005362672.

The spelling of 2451640289 in words is "two billion, four hundred fifty-one million, six hundred forty thousand, two hundred eighty-nine".