3139744068 has 18 divisors (see below), whose sum is σ = 7936575374. Its totient is φ = 1046581344.

The previous prime is 3139744061. The next prime is 3139744079. The reversal of 3139744068 is 8604479313.

It can be written as a sum of positive squares in only one way, i.e., 3135776004 + 3968064 = 55998^2 + 1992^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (3139744061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43607521 + ... + 43607592.

Almost surely, 2^3139744068 is an apocalyptic number.

It is an amenable number.

3139744068 is an abundant number, since it is smaller than the sum of its proper divisors (4796831306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3139744068 is a wasteful number, since it uses less digits than its factorization.

3139744068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87215123 (or 87215118 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 3139744068 is about 56033.4192067555. The cubic root of 3139744068 is about 1464.3045646474.

The spelling of 3139744068 in words is "three billion, one hundred thirty-nine million, seven hundred forty-four thousand, sixty-eight".