2151318 has 16 divisors (see below), whose sum is σ = 4633776. Its totient is φ = 661920.

The previous prime is 2151301. The next prime is 2151319. The reversal of 2151318 is 8131512.

It is a junction number, because it is equal to n+sod(n) for n = 2151294 and 2151303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13713 + ... + 13868.

It is an arithmetic number, because the mean of its divisors is an integer number (289611).

2^2151318 is an apocalyptic number.

2151318 is an abundant number, since it is smaller than the sum of its proper divisors (2482458).

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

2151318 is a wasteful number, since it uses less digits than its factorization.

2151318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27599.

The product of its digits is 240, while the sum is 21.

The square root of 2151318 is about 1466.7371952739. The cubic root of 2151318 is about 129.0926562254.

The spelling of 2151318 in words is "two million, one hundred fifty-one thousand, three hundred eighteen".