2129761536 has 144 divisors (see below), whose sum is σ = 6500312448. Its totient is φ = 606412800.

The previous prime is 2129761519. The next prime is 2129761559. The reversal of 2129761536 is 6351679212.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2262826 + ... + 2263766.

Almost surely, 2^2129761536 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 2129761536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3250156224).

2129761536 is an abundant number, since it is smaller than the sum of its proper divisors (4370550912).

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

2129761536 is an equidigital number, since it uses as much as digits as its factorization.

2129761536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388 (or 1374 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 2129761536 is about 46149.3394968985. The cubic root of 2129761536 is about 1286.6003338899.

The spelling of 2129761536 in words is "two billion, one hundred twenty-nine million, seven hundred sixty-one thousand, five hundred thirty-six".