3728761438 has 16 divisors (see below), whose sum is σ = 5905008720. Its totient is φ = 1761008256.

The previous prime is 3728761433. The next prime is 3728761451. The reversal of 3728761438 is 8341678273.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3728761391 and 3728761400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728761433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132781 + ... + 158392.

It is an arithmetic number, because the mean of its divisors is an integer number (369063045).

Almost surely, 2^3728761438 is an apocalyptic number.

3728761438 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3728761438 is a deficient number, since it is larger than the sum of its proper divisors (2176247282).

3728761438 is a wasteful number, since it uses less digits than its factorization.

3728761438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291531.

The product of its digits is 1354752, while the sum is 49.

The square root of 3728761438 is about 61063.5852042770. The cubic root of 3728761438 is about 1550.6776694058.

The spelling of 3728761438 in words is "three billion, seven hundred twenty-eight million, seven hundred sixty-one thousand, four hundred thirty-eight".