30790409621 has 8 divisors (see below), whose sum is σ = 31681055544. Its totient is φ = 29902841280.

The previous prime is 30790409599. The next prime is 30790409633. The reversal of 30790409621 is 12690409703.

It can be written as a sum of positive squares in 4 ways, for example, as 5488735396 + 25301674225 = 74086^2 + 159065^2 .

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 30790409621 - 2¹⁴ = 30790393237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30790409681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 749090 + ... + 789123.

It is an arithmetic number, because the mean of its divisors is an integer number (3960131943).

Almost surely, 2^30790409621 is an apocalyptic number.

It is an amenable number.

30790409621 is a deficient number, since it is larger than the sum of its proper divisors (890645923).

30790409621 is a wasteful number, since it uses less digits than its factorization.

30790409621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538791.

The product of its (nonzero) digits is 81648, while the sum is 41.

The spelling of 30790409621 in words is "thirty billion, seven hundred ninety million, four hundred nine thousand, six hundred twenty-one".