1663100340 has 192 divisors, whose sum is σ = 5227165440. Its totient is φ = 391680000.

The previous prime is 1663100339. The next prime is 1663100357. The reversal of 1663100340 is 430013661.

It is a self number, because there is not a number n which added to its sum of digits gives 1663100340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4066056 + ... + 4066464.

It is an arithmetic number, because the mean of its divisors is an integer number (27224820).

Almost surely, 2^1663100340 is an apocalyptic number.

1663100340 is a gapful number since it is divisible by the number (10) 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 1663100340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2613582720).

1663100340 is an abundant number, since it is smaller than the sum of its proper divisors (3564065100).

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

1663100340 is a wasteful number, since it uses less digits than its factorization.

1663100340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1663100340 is about 40781.1272526888. The cubic root of 1663100340 is about 1184.7848280290.

The spelling of 1663100340 in words is "one billion, six hundred sixty-three million, one hundred thousand, three hundred forty".