2157218150 has 24 divisors (see below), whose sum is σ = 4018631184. Its totient is φ = 861552800.

The previous prime is 2157218131. The next prime is 2157218153. The reversal of 2157218150 is 518127512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157218153) 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 11 ways as a sum of consecutive naturals, for example, 386 + ... + 65685.

It is an arithmetic number, because the mean of its divisors is an integer number (167442966).

Almost surely, 2^2157218150 is an apocalyptic number.

2157218150 is a deficient number, since it is larger than the sum of its proper divisors (1861413034).

2157218150 is a wasteful number, since it uses less digits than its factorization.

2157218150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66736 (or 66731 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 32.

The square root of 2157218150 is about 46445.8625713852. The cubic root of 2157218150 is about 1292.1056391208.

The spelling of 2157218150 in words is "two billion, one hundred fifty-seven million, two hundred eighteen thousand, one hundred fifty".