1780193141 has 2 divisors, whose sum is σ = 1780193142. Its totient is φ = 1780193140.

The previous prime is 1780193119. The next prime is 1780193161. The reversal of 1780193141 is 1413910871.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1766100625 + 14092516 = 42025^2 + 3754^2 .

It is a cyclic number.

It is not a de Polignac number, because 1780193141 - 2²⁶ = 1713084277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1780193161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 890096570 + 890096571.

It is an arithmetic number, because the mean of its divisors is an integer number (890096571).

Almost surely, 2^1780193141 is an apocalyptic number.

It is an amenable number.

1780193141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1780193141 is an equidigital number, since it uses as much as digits as its factorization.

1780193141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 1780193141 is about 42192.3350977402. The cubic root of 1780193141 is about 1211.9621060614.

The spelling of 1780193141 in words is "one billion, seven hundred eighty million, one hundred ninety-three thousand, one hundred forty-one".