4638731 has 4 divisors (see below), whose sum is σ = 4657464. Its totient is φ = 4620000.

The previous prime is 4638721. The next prime is 4638737. The reversal of 4638731 is 1378364.

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

It is a cyclic number.

It is not a de Polignac number, because 4638731 - 2¹⁰ = 4637707 is a prime.

It is a super-2 number, since 2×4638731² = 43035650580722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4638737) 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, 8990 + ... + 9491.

It is an arithmetic number, because the mean of its divisors is an integer number (1164366).

Almost surely, 2^4638731 is an apocalyptic number.

4638731 is a deficient number, since it is larger than the sum of its proper divisors (18733).

4638731 is a wasteful number, since it uses less digits than its factorization.

4638731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18732.

The product of its digits is 12096, while the sum is 32.

The square root of 4638731 is about 2153.7713434810. The cubic root of 4638731 is about 166.7758116198.

The spelling of 4638731 in words is "four million, six hundred thirty-eight thousand, seven hundred thirty-one".