1945129 has 2 divisors, whose sum is σ = 1945130. Its totient is φ = 1945128.

The previous prime is 1945121. The next prime is 1945169. The reversal of 1945129 is 9215491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1525225 + 419904 = 1235^2 + 648^2 .

It is a cyclic number.

It is not a de Polignac number, because 1945129 - 2³ = 1945121 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1945129.

It is not a weakly prime, because it can be changed into another prime (1945121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972564 + 972565.

It is an arithmetic number, because the mean of its divisors is an integer number (972565).

2^1945129 is an apocalyptic number.

It is an amenable number.

1945129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1945129 is an equidigital number, since it uses as much as digits as its factorization.

1945129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 31.

The square root of 1945129 is about 1394.6788160720. The cubic root of 1945129 is about 124.8291853518.

The spelling of 1945129 in words is "one million, nine hundred forty-five thousand, one hundred twenty-nine".