30745916990 has 16 divisors (see below), whose sum is σ = 55390257648. Its totient is φ = 12287787456.

The previous prime is 30745916989. The next prime is 30745917011. The reversal of 30745916990 is 9961954703.

It is a happy number.

It is a super-2 number, since 2×30745916990² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1310207 + ... + 1333466.

It is an arithmetic number, because the mean of its divisors is an integer number (3461891103).

Almost surely, 2^30745916990 is an apocalyptic number.

30745916990 is a deficient number, since it is larger than the sum of its proper divisors (24644340658).

30745916990 is a wasteful number, since it uses less digits than its factorization.

30745916990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644843.

The product of its (nonzero) digits is 1837080, while the sum is 53.

The spelling of 30745916990 in words is "thirty billion, seven hundred forty-five million, nine hundred sixteen thousand, nine hundred ninety".