1969172323 has 2 divisors, whose sum is σ = 1969172324. Its totient is φ = 1969172322.

The previous prime is 1969172311. The next prime is 1969172333. The reversal of 1969172323 is 3232719691.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1969172323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1969172323.

It is not a weakly prime, because it can be changed into another prime (1969172333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984586161 + 984586162.

It is an arithmetic number, because the mean of its divisors is an integer number (984586162).

Almost surely, 2^1969172323 is an apocalyptic number.

1969172323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1969172323 is an equidigital number, since it uses as much as digits as its factorization.

1969172323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 43.

The square root of 1969172323 is about 44375.3571591261. The cubic root of 1969172323 is about 1253.4140955782.

The spelling of 1969172323 in words is "one billion, nine hundred sixty-nine million, one hundred seventy-two thousand, three hundred twenty-three".