2391838 has 4 divisors (see below), whose sum is σ = 3587760. Its totient is φ = 1195918.

The previous prime is 2391827. The next prime is 2391847. The reversal of 2391838 is 8381932.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597958 + ... + 597961.

It is an arithmetic number, because the mean of its divisors is an integer number (896940).

2^2391838 is an apocalyptic number.

2391838 is a deficient number, since it is larger than the sum of its proper divisors (1195922).

2391838 is a wasteful number, since it uses less digits than its factorization.

2391838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195921.

The product of its digits is 10368, while the sum is 34.

The square root of 2391838 is about 1546.5568208120. The cubic root of 2391838 is about 133.7346423104.

The spelling of 2391838 in words is "two million, three hundred ninety-one thousand, eight hundred thirty-eight".