1880065949 has 2 divisors, whose sum is σ = 1880065950. Its totient is φ = 1880065948.

The previous prime is 1880065939. The next prime is 1880065973. The reversal of 1880065949 is 9495600881.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1834408900 + 45657049 = 42830^2 + 6757^2 .

It is a cyclic number.

It is not a de Polignac number, because 1880065949 - 2²⁴ = 1863288733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1880065897 and 1880065906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1880065919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940032974 + 940032975.

It is an arithmetic number, because the mean of its divisors is an integer number (940032975).

Almost surely, 2^1880065949 is an apocalyptic number.

It is an amenable number.

1880065949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1880065949 is an equidigital number, since it uses as much as digits as its factorization.

1880065949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 1880065949 is about 43359.7272708212. The cubic root of 1880065949 is about 1234.2155900058.

The spelling of 1880065949 in words is "one billion, eight hundred eighty million, sixty-five thousand, nine hundred forty-nine".