1673722429 has 2 divisors, whose sum is σ = 1673722430. Its totient is φ = 1673722428.

The previous prime is 1673722387. The next prime is 1673722433. The reversal of 1673722429 is 9242273761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1360503225 + 313219204 = 36885^2 + 17698^2 .

It is a cyclic number.

It is not a de Polignac number, because 1673722429 - 2²⁹ = 1136851517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1673722469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836861214 + 836861215.

It is an arithmetic number, because the mean of its divisors is an integer number (836861215).

Almost surely, 2^1673722429 is an apocalyptic number.

It is an amenable number.

1673722429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1673722429 is an equidigital number, since it uses as much as digits as its factorization.

1673722429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 43.

The square root of 1673722429 is about 40911.1528681361. The cubic root of 1673722429 is about 1187.3018522794.

The spelling of 1673722429 in words is "one billion, six hundred seventy-three million, seven hundred twenty-two thousand, four hundred twenty-nine".