1290947673 has 16 divisors (see below), whose sum is σ = 1781565120. Its totient is φ = 830512704.

The previous prime is 1290947653. The next prime is 1290947681. The reversal of 1290947673 is 3767490921.

It is a happy number.

It is not a de Polignac number, because 1290947673 - 2⁵ = 1290947641 is a prime.

It is a super-2 number, since 2×1290947673² = 3333091788848229858, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1290947653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265815 + ... + 270627.

It is an arithmetic number, because the mean of its divisors is an integer number (111347820).

Almost surely, 2^1290947673 is an apocalyptic number.

It is an amenable number.

1290947673 is a deficient number, since it is larger than the sum of its proper divisors (490617447).

1290947673 is a wasteful number, since it uses less digits than its factorization.

1290947673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7928.

The product of its (nonzero) digits is 571536, while the sum is 48.

The square root of 1290947673 is about 35929.7602691696. The cubic root of 1290947673 is about 1088.8537379003.

The spelling of 1290947673 in words is "one billion, two hundred ninety million, nine hundred forty-seven thousand, six hundred seventy-three".