1880825729 has 2 divisors, whose sum is σ = 1880825730. Its totient is φ = 1880825728.

The previous prime is 1880825701. The next prime is 1880825731. The reversal of 1880825729 is 9275280881.

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., 1410152704 + 470673025 = 37552^2 + 21695^2 .

It is an emirp because it is prime and its reverse (9275280881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1880825729 - 2⁸ = 1880825473 is a prime.

It is a Sophie Germain prime.

Together with 1880825731, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1880825129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940412864 + 940412865.

It is an arithmetic number, because the mean of its divisors is an integer number (940412865).

Almost surely, 2^1880825729 is an apocalyptic number.

It is an amenable number.

1880825729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1880825729 is an equidigital number, since it uses as much as digits as its factorization.

1880825729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 50.

The square root of 1880825729 is about 43368.4877416771. The cubic root of 1880825729 is about 1234.3818263781.

The spelling of 1880825729 in words is "one billion, eight hundred eighty million, eight hundred twenty-five thousand, seven hundred twenty-nine".