2105770747 has 2 divisors, whose sum is σ = 2105770748. Its totient is φ = 2105770746.

The previous prime is 2105770729. The next prime is 2105770781. The reversal of 2105770747 is 7470775012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2105770747 - 2¹⁵ = 2105737979 is a prime.

It is not a weakly prime, because it can be changed into another prime (2105770717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052885373 + 1052885374.

It is an arithmetic number, because the mean of its divisors is an integer number (1052885374).

Almost surely, 2^2105770747 is an apocalyptic number.

2105770747 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105770747 is an equidigital number, since it uses as much as digits as its factorization.

2105770747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96040, while the sum is 40.

The square root of 2105770747 is about 45888.6777647820. The cubic root of 2105770747 is about 1281.7510919089.

The spelling of 2105770747 in words is "two billion, one hundred five million, seven hundred seventy thousand, seven hundred forty-seven".