1290227674 has 4 divisors (see below), whose sum is σ = 1935341514. Its totient is φ = 645113836.

The previous prime is 1290227669. The next prime is 1290227677. The reversal of 1290227674 is 4767220921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 859955625 + 430272049 = 29325^2 + 20743^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1290227677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322556917 + ... + 322556920.

Almost surely, 2^1290227674 is an apocalyptic number.

1290227674 is a deficient number, since it is larger than the sum of its proper divisors (645113840).

1290227674 is an equidigital number, since it uses as much as digits as its factorization.

1290227674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645113839.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 1290227674 is about 35919.7393364707. The cubic root of 1290227674 is about 1088.6512718071.

The spelling of 1290227674 in words is "one billion, two hundred ninety million, two hundred twenty-seven thousand, six hundred seventy-four".