3145256139169 has 3 divisors (see below), whose sum is σ = 3145257912657. Its totient is φ = 3145254365682.

The previous prime is 3145256139161. The next prime is 3145256139191. The reversal of 3145256139169 is 9619316525413.

The square root of 3145256139169 is 1773487.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 3145256139169 - 2³ = 3145256139161 is a prime.

It is a super-2 number, since 2×3145256139169² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3145256139161) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 886744 + ... + 2660230.

It is an arithmetic number, because the mean of its divisors is an integer number (1048419304219).

Almost surely, 2^{3145256139169} is an apocalyptic number.

3145256139169 is the 1773487-th square number.

3145256139169 is the 886744-th centered octagonal number.

It is an amenable number.

3145256139169 is a deficient number, since it is larger than the sum of its proper divisors (1773488).

3145256139169 is an frugal number, since it uses more digits than its factorization.

3145256139169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3546974 (or 1773487 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 55.

The spelling of 3145256139169 in words is "three trillion, one hundred forty-five billion, two hundred fifty-six million, one hundred thirty-nine thousand, one hundred sixty-nine".