7738728164 has 6 divisors (see below), whose sum is σ = 13542774294. Its totient is φ = 3869364080.

The previous prime is 7738728163. The next prime is 7738728197. The reversal of 7738728164 is 4618278377.

It can be written as a sum of positive squares in only one way, i.e., 7575961600 + 162766564 = 87040^2 + 12758^2 .

It is not an unprimeable number, because it can be changed into a prime (7738728163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 967341017 + ... + 967341024.

It is an arithmetic number, because the mean of its divisors is an integer number (2257129049).

Almost surely, 2^7738728164 is an apocalyptic number.

It is an amenable number.

7738728164 is a deficient number, since it is larger than the sum of its proper divisors (5804046130).

7738728164 is a wasteful number, since it uses less digits than its factorization.

7738728164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934682045 (or 1934682043 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 53.

The square root of 7738728164 is about 87970.0412867926. The cubic root of 7738728164 is about 1977.9859263173.

The spelling of 7738728164 in words is "seven billion, seven hundred thirty-eight million, seven hundred twenty-eight thousand, one hundred sixty-four".