4154638 has 4 divisors (see below), whose sum is σ = 6231960. Its totient is φ = 2077318.

The previous prime is 4154629. The next prime is 4154639. The reversal of 4154638 is 8364514.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8364514 = 2 ⋅4182257.

It is a super-2 number, since 2×4154638² = 34522033822088, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4154639) by changing a digit.

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, 1038658 + ... + 1038661.

It is an arithmetic number, because the mean of its divisors is an integer number (1557990).

Almost surely, 2^4154638 is an apocalyptic number.

4154638 is a deficient number, since it is larger than the sum of its proper divisors (2077322).

4154638 is a wasteful number, since it uses less digits than its factorization.

4154638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077321.

The product of its digits is 11520, while the sum is 31.

The square root of 4154638 is about 2038.2929131997. The cubic root of 4154638 is about 160.7599008532.

The spelling of 4154638 in words is "four million, one hundred fifty-four thousand, six hundred thirty-eight".