1649887195320 has 1536 divisors, whose sum is σ = 7318221281280. Its totient is φ = 324397301760.

The previous prime is 1649887195283. The next prime is 1649887195343. The reversal of 1649887195320 is 235917889461.

1649887195320 is a `hidden beast` number, since 1 + 6 + 4 + 9 + 8 + 87 + 19 + 532 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1699162435 + ... + 1699163405.

It is an arithmetic number, because the mean of its divisors is an integer number (4764466980).

It is a 1-persistent number, because it is pandigital, but 2⋅1649887195320 = 3299774390640 is not.

Almost surely, 2^{1649887195320} is an apocalyptic number.

1649887195320 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 1649887195320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3659110640640).

1649887195320 is an abundant number, since it is smaller than the sum of its proper divisors (5668334085960).

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

1649887195320 is a wasteful number, since it uses less digits than its factorization.

1649887195320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147 (or 1131 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The spelling of 1649887195320 in words is "one trillion, six hundred forty-nine billion, eight hundred eighty-seven million, one hundred ninety-five thousand, three hundred twenty".