2126818 has 4 divisors (see below), whose sum is σ = 3190230. Its totient is φ = 1063408.

The previous prime is 2126809. The next prime is 2126827. The reversal of 2126818 is 8186212.

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

It is an interprime number because it is at equal distance from previous prime (2126809) and next prime (2126827).

It can be written as a sum of positive squares in only one way, i.e., 2122849 + 3969 = 1457^2 + 63^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 531703 + ... + 531706.

2^2126818 is an apocalyptic number.

2126818 is a deficient number, since it is larger than the sum of its proper divisors (1063412).

2126818 is a wasteful number, since it uses less digits than its factorization.

2126818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063411.

The product of its digits is 1536, while the sum is 28.

The square root of 2126818 is about 1458.3614092535. The cubic root of 2126818 is about 128.6007325328.

The spelling of 2126818 in words is "two million, one hundred twenty-six thousand, eight hundred eighteen".