2161746750 has 64 divisors (see below), whose sum is σ = 5429129472. Its totient is φ = 572896800.

The previous prime is 2161746709. The next prime is 2161746761. The reversal of 2161746750 is 576471612.

It is a super-2 number, since 2×2161746750² = 9346298022271125000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2161746699 and 2161746708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113409 + ... + 131091.

It is an arithmetic number, because the mean of its divisors is an integer number (84830148).

Almost surely, 2^2161746750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2161746750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2714564736).

2161746750 is an abundant number, since it is smaller than the sum of its proper divisors (3267382722).

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

2161746750 is a wasteful number, since it uses less digits than its factorization.

2161746750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17866 (or 17856 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 2161746750 is about 46494.5883947799. The cubic root of 2161746750 is about 1293.0091700215.

The spelling of 2161746750 in words is "two billion, one hundred sixty-one million, seven hundred forty-six thousand, seven hundred fifty".