30789791604 has 720 divisors, whose sum is σ = 104993957376. Its totient is φ = 7763558400.

The previous prime is 30789791597. The next prime is 30789791623. The reversal of 30789791604 is 40619798703.

30789791604 = T₂₀₆₈₀ + T₂₀₆₈₁ + ... + T₂₀₈₂₂.

It is a happy number.

It is a super-2 number, since 2×30789791604² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 317420484 + ... + 317420580.

Almost surely, 2^30789791604 is an apocalyptic number.

30789791604 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30789791604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52496978688).

30789791604 is an abundant number, since it is smaller than the sum of its proper divisors (74204165772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30789791604 is a wasteful number, since it uses less digits than its factorization.

30789791604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 30789791604 in words is "thirty billion, seven hundred eighty-nine million, seven hundred ninety-one thousand, six hundred four".