2918642 has 8 divisors (see below), whose sum is σ = 4387932. Its totient is φ = 1456000.

The previous prime is 2918621. The next prime is 2918689. The reversal of 2918642 is 2468192.

It can be written as a sum of positive squares in 2 ways, for example, as 2886601 + 32041 = 1699^2 + 179^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2918642² = 17036942248328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2918599 and 2918608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359 + ... + 2442.

2^2918642 is an apocalyptic number.

2918642 is a deficient number, since it is larger than the sum of its proper divisors (1469290).

2918642 is a wasteful number, since it uses less digits than its factorization.

2918642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324.

The product of its digits is 6912, while the sum is 32.

The square root of 2918642 is about 1708.4033481587. The cubic root of 2918642 is about 142.9092289118.

The spelling of 2918642 in words is "two million, nine hundred eighteen thousand, six hundred forty-two".