2851946 has 4 divisors (see below), whose sum is σ = 4277922. Its totient is φ = 1425972.

The previous prime is 2851943. The next prime is 2851949. The reversal of 2851946 is 6491582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6491582 = 2 ⋅3245791.

It is an interprime number because it is at equal distance from previous prime (2851943) and next prime (2851949).

It can be written as a sum of positive squares in only one way, i.e., 2758921 + 93025 = 1661^2 + 305^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2851943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712985 + ... + 712988.

2^2851946 is an apocalyptic number.

2851946 is a deficient number, since it is larger than the sum of its proper divisors (1425976).

2851946 is a wasteful number, since it uses less digits than its factorization.

2851946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425975.

The product of its digits is 17280, while the sum is 35.

The square root of 2851946 is about 1688.7705587202. The cubic root of 2851946 is about 141.8122560182.

The spelling of 2851946 in words is "two million, eight hundred fifty-one thousand, nine hundred forty-six".