2158252850 has 96 divisors (see below), whose sum is σ = 4607986320. Its totient is φ = 745021440.

The previous prime is 2158252777. The next prime is 2158252853. The reversal of 2158252850 is 582528512.

It is a Cunningham number, because it is equal to 46457²+1.

It can be written as a sum of positive squares in 24 ways, for example, as 80442961 + 2077809889 = 8969^2 + 45583^2 .

It is not an unprimeable number, because it can be changed into a prime (2158252853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1911086 + ... + 1912214.

Almost surely, 2^2158252850 is an apocalyptic number.

2158252850 is an abundant number, since it is smaller than the sum of its proper divisors (2449733470).

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

2158252850 is a wasteful number, since it uses less digits than its factorization.

2158252850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344 (or 1339 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 38.

The square root of 2158252850 is about 46457.0000107626. Note that the first 4 decimals coincide. The cubic root of 2158252850 is about 1292.3121903234.

The spelling of 2158252850 in words is "two billion, one hundred fifty-eight million, two hundred fifty-two thousand, eight hundred fifty".