1629723047 has 2 divisors, whose sum is σ = 1629723048. Its totient is φ = 1629723046.

The previous prime is 1629722999. The next prime is 1629723083. The reversal of 1629723047 is 7403279261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1629723047 - 2¹⁰ = 1629722023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1629722995 and 1629723013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1629723097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814861523 + 814861524.

It is an arithmetic number, because the mean of its divisors is an integer number (814861524).

Almost surely, 2^1629723047 is an apocalyptic number.

1629723047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1629723047 is an equidigital number, since it uses as much as digits as its factorization.

1629723047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 1629723047 is about 40369.8284242081. The cubic root of 1629723047 is about 1176.8052640936.

The spelling of 1629723047 in words is "one billion, six hundred twenty-nine million, seven hundred twenty-three thousand, forty-seven".