2660428819 has 2 divisors, whose sum is σ = 2660428820. Its totient is φ = 2660428818.

The previous prime is 2660428783. The next prime is 2660428867. The reversal of 2660428819 is 9188240662.

2660428819 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 is a cyclic number.

It is not a de Polignac number, because 2660428819 - 2⁹ = 2660428307 is a prime.

It is a super-2 number, since 2×2660428819² = 14155763001931469522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2660428879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330214409 + 1330214410.

It is an arithmetic number, because the mean of its divisors is an integer number (1330214410).

Almost surely, 2^2660428819 is an apocalyptic number.

2660428819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660428819 is an equidigital number, since it uses as much as digits as its factorization.

2660428819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 2660428819 is about 51579.3448872705. The cubic root of 2660428819 is about 1385.6404340020.

The spelling of 2660428819 in words is "two billion, six hundred sixty million, four hundred twenty-eight thousand, eight hundred nineteen".