30395518642 has 4 divisors (see below), whose sum is σ = 45593277966. Its totient is φ = 15197759320.

The previous prime is 30395518639. The next prime is 30395518667. The reversal of 30395518642 is 24681559303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24681559303 = 19 ⋅1299029437.

It can be written as a sum of positive squares in only one way, i.e., 24326952841 + 6068565801 = 155971^2 + 77901^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30395518592 and 30395518601.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7598879659 + ... + 7598879662.

Almost surely, 2^30395518642 is an apocalyptic number.

30395518642 is a deficient number, since it is larger than the sum of its proper divisors (15197759324).

30395518642 is a wasteful number, since it uses less digits than its factorization.

30395518642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15197759323.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 30395518642 in words is "thirty billion, three hundred ninety-five million, five hundred eighteen thousand, six hundred forty-two".