3728111137 has 4 divisors (see below), whose sum is σ = 3814811440. Its totient is φ = 3641410836.

The previous prime is 3728111131. The next prime is 3728111159. The reversal of 3728111137 is 7311118273.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7311118273 = 84349 ⋅86677.

It is a cyclic number.

It is not a de Polignac number, because 3728111137 - 2³ = 3728111129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3728111131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43350087 + ... + 43350172.

It is an arithmetic number, because the mean of its divisors is an integer number (953702860).

Almost surely, 2^3728111137 is an apocalyptic number.

It is an amenable number.

3728111137 is a deficient number, since it is larger than the sum of its proper divisors (86700303).

3728111137 is an equidigital number, since it uses as much as digits as its factorization.

3728111137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86700302.

The product of its digits is 7056, while the sum is 34.

The square root of 3728111137 is about 61058.2601864809. The cubic root of 3728111137 is about 1550.5875174090.

The spelling of 3728111137 in words is "three billion, seven hundred twenty-eight million, one hundred eleven thousand, one hundred thirty-seven".