4681538 has 4 divisors (see below), whose sum is σ = 7022310. Its totient is φ = 2340768.

The previous prime is 4681519. The next prime is 4681559. The reversal of 4681538 is 8351864.

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

It can be written as a sum of positive squares in only one way, i.e., 3411409 + 1270129 = 1847^2 + 1127^2 .

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4681498 and 4681507.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1170383 + ... + 1170386.

Almost surely, 2^4681538 is an apocalyptic number.

4681538 is a deficient number, since it is larger than the sum of its proper divisors (2340772).

4681538 is a wasteful number, since it uses less digits than its factorization.

4681538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340771.

The product of its digits is 23040, while the sum is 35.

The square root of 4681538 is about 2163.6862064542. The cubic root of 4681538 is about 167.2872534751.

The spelling of 4681538 in words is "four million, six hundred eighty-one thousand, five hundred thirty-eight".