2640627929 has 2 divisors, whose sum is σ = 2640627930. Its totient is φ = 2640627928.

The previous prime is 2640627917. The next prime is 2640627959. The reversal of 2640627929 is 9297260462.

2640627929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2447973529 + 192654400 = 49477^2 + 13880^2 .

It is a cyclic number.

It is not a de Polignac number, because 2640627929 - 2¹² = 2640623833 is a prime.

It is not a weakly prime, because it can be changed into another prime (2640627959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320313964 + 1320313965.

It is an arithmetic number, because the mean of its divisors is an integer number (1320313965).

Almost surely, 2^2640627929 is an apocalyptic number.

It is an amenable number.

2640627929 is a deficient number, since it is larger than the sum of its proper divisors (1).

2640627929 is an equidigital number, since it uses as much as digits as its factorization.

2640627929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 2640627929 is about 51387.0404771475. The cubic root of 2640627929 is about 1382.1942144659.

The spelling of 2640627929 in words is "two billion, six hundred forty million, six hundred twenty-seven thousand, nine hundred twenty-nine".