774742153 has 2 divisors, whose sum is σ = 774742154. Its totient is φ = 774742152.

The previous prime is 774742127. The next prime is 774742183. The reversal of 774742153 is 351247477.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 774397584 + 344569 = 27828^2 + 587^2 .

It is a cyclic number.

It is not a de Polignac number, because 774742153 - 2²¹ = 772645001 is a prime.

It is not a weakly prime, because it can be changed into another prime (774742183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387371076 + 387371077.

It is an arithmetic number, because the mean of its divisors is an integer number (387371077).

Almost surely, 2^774742153 is an apocalyptic number.

It is an amenable number.

774742153 is a deficient number, since it is larger than the sum of its proper divisors (1).

774742153 is an equidigital number, since it uses as much as digits as its factorization.

774742153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 164640, while the sum is 40.

The square root of 774742153 is about 27834.1903600590. The cubic root of 774742153 is about 918.4433952588.

The spelling of 774742153 in words is "seven hundred seventy-four million, seven hundred forty-two thousand, one hundred fifty-three".