7738728191 has 16 divisors (see below), whose sum is σ = 7916418048. Its totient is φ = 7563628800.

The previous prime is 7738728163. The next prime is 7738728197. The reversal of 7738728191 is 1918278377.

It is a cyclic number.

It is not a de Polignac number, because 7738728191 - 2¹⁴ = 7738711807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7738728197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2832296 + ... + 2835026.

It is an arithmetic number, because the mean of its divisors is an integer number (494776128).

Almost surely, 2^7738728191 is an apocalyptic number.

7738728191 is a deficient number, since it is larger than the sum of its proper divisors (177689857).

7738728191 is a wasteful number, since it uses less digits than its factorization.

7738728191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3182.

The product of its digits is 1185408, while the sum is 53.

The square root of 7738728191 is about 87970.0414402540. The cubic root of 7738728191 is about 1977.9859286176.

The spelling of 7738728191 in words is "seven billion, seven hundred thirty-eight million, seven hundred twenty-eight thousand, one hundred ninety-one".