1969992047 has 2 divisors, whose sum is σ = 1969992048. Its totient is φ = 1969992046.

The previous prime is 1969992043. The next prime is 1969992049. The reversal of 1969992047 is 7402999691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1969992047 - 2² = 1969992043 is a prime.

Together with 1969992049, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1969991983 and 1969992001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1969992043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984996023 + 984996024.

It is an arithmetic number, because the mean of its divisors is an integer number (984996024).

Almost surely, 2^1969992047 is an apocalyptic number.

1969992047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1969992047 is an equidigital number, since it uses as much as digits as its factorization.

1969992047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2204496, while the sum is 56.

The square root of 1969992047 is about 44384.5924505340. The cubic root of 1969992047 is about 1253.5879945421.

The spelling of 1969992047 in words is "one billion, nine hundred sixty-nine million, nine hundred ninety-two thousand, forty-seven".