3728681113 has 2 divisors, whose sum is σ = 3728681114. Its totient is φ = 3728681112.

The previous prime is 3728681107. The next prime is 3728681129. The reversal of 3728681113 is 3111868273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2283692944 + 1444988169 = 47788^2 + 38013^2 .

It is a cyclic number.

It is not a de Polignac number, because 3728681113 - 2¹³ = 3728672921 is a prime.

It is not a weakly prime, because it can be changed into another prime (3728681153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1864340556 + 1864340557.

It is an arithmetic number, because the mean of its divisors is an integer number (1864340557).

Almost surely, 2^3728681113 is an apocalyptic number.

It is an amenable number.

3728681113 is a deficient number, since it is larger than the sum of its proper divisors (1).

3728681113 is an equidigital number, since it uses as much as digits as its factorization.

3728681113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 3728681113 is about 61062.9274846858. The cubic root of 3728681113 is about 1550.6665344235. Note that the first 3 decimals are identical.

The spelling of 3728681113 in words is "three billion, seven hundred twenty-eight million, six hundred eighty-one thousand, one hundred thirteen".