6400195748 has 12 divisors (see below), whose sum is σ = 11258376780. Its totient is φ = 3183516672.

The previous prime is 6400195741. The next prime is 6400195801. The reversal of 6400195748 is 8475910046.

It can be written as a sum of positive squares in 2 ways, for example, as 4363659364 + 2036536384 = 66058^2 + 45128^2 .

It is a super-2 number, since 2×6400195748² = 81925011225434559008, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6400195699 and 6400195708.

It is not an unprimeable number, because it can be changed into a prime (6400195741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4144433 + ... + 4145976.

It is an arithmetic number, because the mean of its divisors is an integer number (938198065).

Almost surely, 2^6400195748 is an apocalyptic number.

It is an amenable number.

6400195748 is a deficient number, since it is larger than the sum of its proper divisors (4858181032).

6400195748 is a wasteful number, since it uses less digits than its factorization.

6400195748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8290606 (or 8290604 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 6400195748 is about 80001.2234156453. The cubic root of 6400195748 is about 1856.6544620382.

The spelling of 6400195748 in words is "six billion, four hundred million, one hundred ninety-five thousand, seven hundred forty-eight".