2051438 has 8 divisors (see below), whose sum is σ = 3100032. Its totient is φ = 1018096.

The previous prime is 2051437. The next prime is 2051443. The reversal of 2051438 is 8341502.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3470 + ... + 4017.

It is an arithmetic number, because the mean of its divisors is an integer number (387504).

2^2051438 is an apocalyptic number.

2051438 is a deficient number, since it is larger than the sum of its proper divisors (1048594).

2051438 is a wasteful number, since it uses less digits than its factorization.

2051438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7626.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2051438 is about 1432.2841896775. The cubic root of 2051438 is about 127.0631054311.

Subtracting 2051438 from its reverse (8341502), we obtain a square (6290064 = 2508²).

The spelling of 2051438 in words is "two million, fifty-one thousand, four hundred thirty-eight".