1903240915648 has 56 divisors (see below), whose sum is σ = 3827574249840. Its totient is φ = 938896757760.

The previous prime is 1903240915607. The next prime is 1903240915673. The reversal of 1903240915648 is 8465190423091.

It is a super-3 number, since 3×1903240915648³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1903240915595 and 1903240915604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794338 + ... + 2106526.

Almost surely, 2^{1903240915648} is an apocalyptic number.

It is an amenable number.

1903240915648 is an abundant number, since it is smaller than the sum of its proper divisors (1924333334192).

1903240915648 is a wasteful number, since it uses less digits than its factorization.

1903240915648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312505 (or 1312495 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 1903240915648 in words is "one trillion, nine hundred three billion, two hundred forty million, nine hundred fifteen thousand, six hundred forty-eight".