30426163638 has 32 divisors (see below), whose sum is σ = 65540192256. Its totient is φ = 9360908448.

The previous prime is 30426163609. The next prime is 30426163657. The reversal of 30426163638 is 83636162403.

It is a self number, because there is not a number n which added to its sum of digits gives 30426163638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1139881 + ... + 1166267.

It is an arithmetic number, because the mean of its divisors is an integer number (2048131008).

Almost surely, 2^30426163638 is an apocalyptic number.

30426163638 is an abundant number, since it is smaller than the sum of its proper divisors (35114028618).

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

30426163638 is a wasteful number, since it uses less digits than its factorization.

30426163638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41188.

The product of its (nonzero) digits is 373248, while the sum is 42.

The spelling of 30426163638 in words is "thirty billion, four hundred twenty-six million, one hundred sixty-three thousand, six hundred thirty-eight".