3139961568 has 24 divisors (see below), whose sum is σ = 8242399368. Its totient is φ = 1046653824.

The previous prime is 3139961567. The next prime is 3139961569. The reversal of 3139961568 is 8651699313.

It is an interprime number because it is at equal distance from previous prime (3139961567) and next prime (3139961569).

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 3139961568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3139961567) 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, 16353871 + ... + 16354062.

It is an arithmetic number, because the mean of its divisors is an integer number (343433307).

Almost surely, 2^3139961568 is an apocalyptic number.

It is an amenable number.

3139961568 is an abundant number, since it is smaller than the sum of its proper divisors (5102437800).

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

3139961568 is a wasteful number, since it uses less digits than its factorization.

3139961568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32707946 (or 32707938 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 51.

The square root of 3139961568 is about 56035.3599792131. The cubic root of 3139961568 is about 1464.3383762025.

The spelling of 3139961568 in words is "three billion, one hundred thirty-nine million, nine hundred sixty-one thousand, five hundred sixty-eight".