3145165861 has 4 divisors (see below), whose sum is σ = 3162736800. Its totient is φ = 3127594924.

The previous prime is 3145165847. The next prime is 3145165939. The reversal of 3145165861 is 1685615413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3145165861 is a prime.

It is a super-3 number, since 3×3145165861³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3145169861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8785201 + ... + 8785558.

It is an arithmetic number, because the mean of its divisors is an integer number (790684200).

Almost surely, 2^3145165861 is an apocalyptic number.

It is an amenable number.

3145165861 is a deficient number, since it is larger than the sum of its proper divisors (17570939).

3145165861 is a wasteful number, since it uses less digits than its factorization.

3145165861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17570938.

The product of its digits is 86400, while the sum is 40.

The square root of 3145165861 is about 56081.7783330736. The cubic root of 3145165861 is about 1465.1469465526.

The spelling of 3145165861 in words is "three billion, one hundred forty-five million, one hundred sixty-five thousand, eight hundred sixty-one".