141778993 has 2 divisors, whose sum is σ = 141778994. Its totient is φ = 141778992.

The previous prime is 141778981. The next prime is 141779003. The reversal of 141778993 is 399877141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81126049 + 60652944 = 9007^2 + 7788^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-141778993 is a prime.

It is not a weakly prime, because it can be changed into another prime (141778913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70889496 + 70889497.

It is an arithmetic number, because the mean of its divisors is an integer number (70889497).

Almost surely, 2^141778993 is an apocalyptic number.

It is an amenable number.

141778993 is a deficient number, since it is larger than the sum of its proper divisors (1).

141778993 is an equidigital number, since it uses as much as digits as its factorization.

141778993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 49.

The square root of 141778993 is about 11907.0984290884. The cubic root of 141778993 is about 521.4395429658.

The spelling of 141778993 in words is "one hundred forty-one million, seven hundred seventy-eight thousand, nine hundred ninety-three".