1628810741 has 2 divisors, whose sum is σ = 1628810742. Its totient is φ = 1628810740.

The previous prime is 1628810737. The next prime is 1628810761. The reversal of 1628810741 is 1470188261.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1621270225 + 7540516 = 40265^2 + 2746^2 .

It is a cyclic number.

It is not a de Polignac number, because 1628810741 - 2² = 1628810737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1628810695 and 1628810704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1628810761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814405370 + 814405371.

It is an arithmetic number, because the mean of its divisors is an integer number (814405371).

Almost surely, 2^1628810741 is an apocalyptic number.

It is an amenable number.

1628810741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1628810741 is an equidigital number, since it uses as much as digits as its factorization.

1628810741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 1628810741 is about 40358.5274880043. The cubic root of 1628810741 is about 1176.5856343637.

The spelling of 1628810741 in words is "one billion, six hundred twenty-eight million, eight hundred ten thousand, seven hundred forty-one".