1646410374648 has 192 divisors, whose sum is σ = 5048106467040. Its totient is φ = 499647688704.

The previous prime is 1646410374619. The next prime is 1646410374667. The reversal of 1646410374648 is 8464730146461.

1646410374648 is a `hidden beast` number, since 1 + 6 + 464 + 103 + 74 + 6 + 4 + 8 = 666.

It is a super-2 number, since 2×1646410374648² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1646410374594 and 1646410374603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1398640 + ... + 2291072.

Almost surely, 2^{1646410374648} is an apocalyptic number.

1646410374648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1646410374648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2524053233520).

1646410374648 is an abundant number, since it is smaller than the sum of its proper divisors (3401696092392).

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

1646410374648 is a wasteful number, since it uses less digits than its factorization.

1646410374648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892540 (or 892524 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 54.

The spelling of 1646410374648 in words is "one trillion, six hundred forty-six billion, four hundred ten million, three hundred seventy-four thousand, six hundred forty-eight".