2164477811 has 2 divisors, whose sum is σ = 2164477812. Its totient is φ = 2164477810.

The previous prime is 2164477807. The next prime is 2164477873. The reversal of 2164477811 is 1187744612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2164477811 - 2² = 2164477807 is a prime.

It is a super-2 number, since 2×2164477811² = 9369928388622703442, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2164474811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082238905 + 1082238906.

It is an arithmetic number, because the mean of its divisors is an integer number (1082238906).

Almost surely, 2^2164477811 is an apocalyptic number.

2164477811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164477811 is an equidigital number, since it uses as much as digits as its factorization.

2164477811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 41.

The square root of 2164477811 is about 46523.9487898437. The cubic root of 2164477811 is about 1293.5534522269.

The spelling of 2164477811 in words is "two billion, one hundred sixty-four million, four hundred seventy-seven thousand, eight hundred eleven".