4738781 has 2 divisors, whose sum is σ = 4738782. Its totient is φ = 4738780.

The previous prime is 4738777. The next prime is 4738793. The reversal of 4738781 is 1878374.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4622500 + 116281 = 2150^2 + 341^2 .

It is a cyclic number.

It is not a de Polignac number, because 4738781 - 2² = 4738777 is a prime.

It is a super-2 number, since 2×4738781² = 44912090731922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4038781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2369390 + 2369391.

It is an arithmetic number, because the mean of its divisors is an integer number (2369391).

Almost surely, 2^4738781 is an apocalyptic number.

It is an amenable number.

4738781 is a deficient number, since it is larger than the sum of its proper divisors (1).

4738781 is an equidigital number, since it uses as much as digits as its factorization.

4738781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 38.

The square root of 4738781 is about 2176.8741350845. The cubic root of 4738781 is about 167.9663221419.

The spelling of 4738781 in words is "four million, seven hundred thirty-eight thousand, seven hundred eighty-one".