1296645002 has 8 divisors (see below), whose sum is σ = 1948702212. Its totient is φ = 647077600.

The previous prime is 1296645001. The next prime is 1296645017. The reversal of 1296645002 is 2005466921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1215986641 + 80658361 = 34871^2 + 8981^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1296645002² = 3362576522423160008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1296645001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621149 + ... + 623232.

Almost surely, 2^1296645002 is an apocalyptic number.

1296645002 is a deficient number, since it is larger than the sum of its proper divisors (652057210).

1296645002 is a wasteful number, since it uses less digits than its factorization.

1296645002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244904.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1296645002 is about 36008.9572467740. The cubic root of 1296645002 is about 1090.4531970624.

The spelling of 1296645002 in words is "one billion, two hundred ninety-six million, six hundred forty-five thousand, two".