1954969171 has 2 divisors, whose sum is σ = 1954969172. Its totient is φ = 1954969170.

The previous prime is 1954969123. The next prime is 1954969187. The reversal of 1954969171 is 1719694591.

It is a strong prime.

It is an emirp because it is prime and its reverse (1719694591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1954969171 - 2¹³ = 1954960979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1954969871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977484585 + 977484586.

It is an arithmetic number, because the mean of its divisors is an integer number (977484586).

Almost surely, 2^1954969171 is an apocalyptic number.

1954969171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1954969171 is an equidigital number, since it uses as much as digits as its factorization.

1954969171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 52.

The square root of 1954969171 is about 44215.0333144735. The cubic root of 1954969171 is about 1250.3932993862.

The spelling of 1954969171 in words is "one billion, nine hundred fifty-four million, nine hundred sixty-nine thousand, one hundred seventy-one".