3651273049 has 2 divisors, whose sum is σ = 3651273050. Its totient is φ = 3651273048.

The previous prime is 3651273013. The next prime is 3651273053. The reversal of 3651273049 is 9403721563.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3028521024 + 622752025 = 55032^2 + 24955^2 .

It is a cyclic number.

It is not a de Polignac number, because 3651273049 - 2²¹ = 3649175897 is a prime.

It is not a weakly prime, because it can be changed into another prime (3651273079) 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, 1825636524 + 1825636525.

It is an arithmetic number, because the mean of its divisors is an integer number (1825636525).

Almost surely, 2^3651273049 is an apocalyptic number.

It is an amenable number.

3651273049 is a deficient number, since it is larger than the sum of its proper divisors (1).

3651273049 is an equidigital number, since it uses as much as digits as its factorization.

3651273049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 3651273049 is about 60425.7647779488. The cubic root of 3651273049 is about 1539.8607071686.

It can be divided in two parts, 36512 and 73049, that added together give a square (109561 = 331²).

The spelling of 3651273049 in words is "three billion, six hundred fifty-one million, two hundred seventy-three thousand, forty-nine".