1954669811 has 2 divisors, whose sum is σ = 1954669812. Its totient is φ = 1954669810.

The previous prime is 1954669729. The next prime is 1954669813. The reversal of 1954669811 is 1189664591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1954669811 - 2¹⁸ = 1954407667 is a prime.

Together with 1954669813, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1954669811.

It is not a weakly prime, because it can be changed into another prime (1954669813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977334905 + 977334906.

It is an arithmetic number, because the mean of its divisors is an integer number (977334906).

Almost surely, 2^1954669811 is an apocalyptic number.

1954669811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1954669811 is an equidigital number, since it uses as much as digits as its factorization.

1954669811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 50.

The square root of 1954669811 is about 44211.6479109295. The cubic root of 1954669811 is about 1250.3294728305.

The spelling of 1954669811 in words is "one billion, nine hundred fifty-four million, six hundred sixty-nine thousand, eight hundred eleven".