1780049059 has 2 divisors, whose sum is σ = 1780049060. Its totient is φ = 1780049058.

The previous prime is 1780049053. The next prime is 1780049123. The reversal of 1780049059 is 9509400871.

It is a weak prime.

It is an emirp because it is prime and its reverse (9509400871) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1780049059 - 2⁷ = 1780048931 is a prime.

It is not a weakly prime, because it can be changed into another prime (1780049053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 890024529 + 890024530.

It is an arithmetic number, because the mean of its divisors is an integer number (890024530).

Almost surely, 2^1780049059 is an apocalyptic number.

1780049059 is a deficient number, since it is larger than the sum of its proper divisors (1).

1780049059 is an equidigital number, since it uses as much as digits as its factorization.

1780049059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 1780049059 is about 42190.6276203614. The cubic root of 1780049059 is about 1211.9294079923.

The spelling of 1780049059 in words is "one billion, seven hundred eighty million, forty-nine thousand, fifty-nine".