1018642390448 has 40 divisors (see below), whose sum is σ = 2093852651520. Its totient is φ = 478715469120.

The previous prime is 1018642390433. The next prime is 1018642390457. The reversal of 1018642390448 is 8440932468101.

It is a junction number, because it is equal to n+sod(n) for n = 1018642390396 and 1018642390405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13153508 + ... + 13230723.

It is an arithmetic number, because the mean of its divisors is an integer number (52346316288).

Almost surely, 2^{1018642390448} is an apocalyptic number.

It is an amenable number.

1018642390448 is an abundant number, since it is smaller than the sum of its proper divisors (1075210261072).

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

1018642390448 is a wasteful number, since it uses less digits than its factorization.

1018642390448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26384385 (or 26384379 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 50.

The spelling of 1018642390448 in words is "one trillion, eighteen billion, six hundred forty-two million, three hundred ninety thousand, four hundred forty-eight".