1634903240448 has 144 divisors (see below), whose sum is σ = 4525884582912. Its totient is φ = 523361280000.

The previous prime is 1634903240447. The next prime is 1634903240549. The reversal of 1634903240448 is 8440423094361.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 1634903240397 and 1634903240406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1634903240447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2856748 + ... + 3380948.

It is an arithmetic number, because the mean of its divisors is an integer number (31429754048).

Almost surely, 2^{1634903240448} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1634903240448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2262942291456).

1634903240448 is an abundant number, since it is smaller than the sum of its proper divisors (2890981342464).

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

1634903240448 is a wasteful number, since it uses less digits than its factorization.

1634903240448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524382 (or 524368 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 48.

The spelling of 1634903240448 in words is "one trillion, six hundred thirty-four billion, nine hundred three million, two hundred forty thousand, four hundred forty-eight".