30146470638 has 32 divisors (see below), whose sum is σ = 61683316992. Its totient is φ = 9819600000.

The previous prime is 30146470633. The next prime is 30146470663. The reversal of 30146470638 is 83607464103.

It is a happy number.

It is a super-2 number, since 2×30146470638² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30146470638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30146470633) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 264988 + ... + 361263.

It is an arithmetic number, because the mean of its divisors is an integer number (1927603656).

Almost surely, 2^30146470638 is an apocalyptic number.

30146470638 is an abundant number, since it is smaller than the sum of its proper divisors (31536846354).

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

30146470638 is a wasteful number, since it uses less digits than its factorization.

30146470638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626440.

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 30146470638 in words is "thirty billion, one hundred forty-six million, four hundred seventy thousand, six hundred thirty-eight".