1973129 has 2 divisors, whose sum is σ = 1973130. Its totient is φ = 1973128.

The previous prime is 1973113. The next prime is 1973143. The reversal of 1973129 is 9213791.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1817104 + 156025 = 1348^2 + 395^2 .

It is an emirp because it is prime and its reverse (9213791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1973129 - 2⁴ = 1973113 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1973095 and 1973104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1973149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986564 + 986565.

It is an arithmetic number, because the mean of its divisors is an integer number (986565).

2^1973129 is an apocalyptic number.

It is an amenable number.

1973129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973129 is an equidigital number, since it uses as much as digits as its factorization.

1973129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 32.

The square root of 1973129 is about 1404.6811025994. The cubic root of 1973129 is about 125.4253032957.

The spelling of 1973129 in words is "one million, nine hundred seventy-three thousand, one hundred twenty-nine".