2150818 has 4 divisors (see below), whose sum is σ = 3226230. Its totient is φ = 1075408.

The previous prime is 2150809. The next prime is 2150821. The reversal of 2150818 is 8180512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2064969 + 85849 = 1437^2 + 293^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2150792 and 2150801.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537703 + ... + 537706.

2^2150818 is an apocalyptic number.

2150818 is a deficient number, since it is larger than the sum of its proper divisors (1075412).

2150818 is a wasteful number, since it uses less digits than its factorization.

2150818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075411.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 2150818 is about 1466.5667390201. The cubic root of 2150818 is about 129.0826543987.

The spelling of 2150818 in words is "two million, one hundred fifty thousand, eight hundred eighteen".