385777741 has 2 divisors, whose sum is σ = 385777742. Its totient is φ = 385777740.

The previous prime is 385777727. The next prime is 385777747. The reversal of 385777741 is 147777583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 347076900 + 38700841 = 18630^2 + 6221^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385777741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385777747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192888870 + 192888871.

It is an arithmetic number, because the mean of its divisors is an integer number (192888871).

Almost surely, 2^385777741 is an apocalyptic number.

It is an amenable number.

385777741 is a deficient number, since it is larger than the sum of its proper divisors (1).

385777741 is an equidigital number, since it uses as much as digits as its factorization.

385777741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152480, while the sum is 49.

The square root of 385777741 is about 19641.2255473023. The cubic root of 385777741 is about 727.9681668295.

The spelling of 385777741 in words is "three hundred eighty-five million, seven hundred seventy-seven thousand, seven hundred forty-one".