3728018307 has 8 divisors (see below), whose sum is σ = 5353051984. Its totient is φ = 2294165088.

The previous prime is 3728018303. The next prime is 3728018323. The reversal of 3728018307 is 7038108273.

3728018307 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3728018307 - 2² = 3728018303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 95590213 = 3728018307 / (3 + 7 + 2 + 8 + 0 + 1 + 8 + 3 + 0 + 7).

It is the 61058-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3728018303) by changing a digit.

It is a nontrivial repunit in base 61057.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47795068 + ... + 47795145.

It is an arithmetic number, because the mean of its divisors is an integer number (669131498).

Almost surely, 2^3728018307 is an apocalyptic number.

3728018307 is a deficient number, since it is larger than the sum of its proper divisors (1625033677).

3728018307 is a wasteful number, since it uses less digits than its factorization.

3728018307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95590229.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 3728018307 is about 61057.5000061418. The cubic root of 3728018307 is about 1550.5746474213.

The spelling of 3728018307 in words is "three billion, seven hundred twenty-eight million, eighteen thousand, three hundred seven".