2129190236 has 48 divisors (see below), whose sum is σ = 4143068160. Its totient is φ = 953285760.

The previous prime is 2129190233. The next prime is 2129190251. The reversal of 2129190236 is 6320919212.

2129190236 = 89² + 90² + ... + 1855².

It is a super-2 number, since 2×2129190236² = 9066902122155471392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2129190196 and 2129190205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129190233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90800 + ... + 111816.

It is an arithmetic number, because the mean of its divisors is an integer number (86313920).

Almost surely, 2^2129190236 is an apocalyptic number.

It is an amenable number.

2129190236 is a deficient number, since it is larger than the sum of its proper divisors (2013877924).

2129190236 is a wasteful number, since it uses less digits than its factorization.

2129190236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21114 (or 21112 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 2129190236 is about 46143.1493940325. The cubic root of 2129190236 is about 1286.4852818068.

The spelling of 2129190236 in words is "two billion, one hundred twenty-nine million, one hundred ninety thousand, two hundred thirty-six".