1290930793 has 8 divisors (see below), whose sum is σ = 1304863560. Its totient is φ = 1277020800.

The previous prime is 1290930791. The next prime is 1290930847. The reversal of 1290930793 is 3970390921.

It can be written as a sum of positive squares in 4 ways, for example, as 1054171024 + 236759769 = 32468^2 + 15387^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1290930793 - 2¹ = 1290930791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1290930791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123973 + ... + 133981.

It is an arithmetic number, because the mean of its divisors is an integer number (163107945).

Almost surely, 2^1290930793 is an apocalyptic number.

It is an amenable number.

1290930793 is a deficient number, since it is larger than the sum of its proper divisors (13932767).

1290930793 is a wasteful number, since it uses less digits than its factorization.

1290930793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11387.

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 1290930793 is about 35929.5253656377. The cubic root of 1290930793 is about 1088.8489920505.

The spelling of 1290930793 in words is "one billion, two hundred ninety million, nine hundred thirty thousand, seven hundred ninety-three".