3145685515 has 16 divisors (see below), whose sum is σ = 4384808640. Its totient is φ = 2121678720.

The previous prime is 3145685507. The next prime is 3145685519. The reversal of 3145685515 is 5155865413.

It is not a de Polignac number, because 3145685515 - 2³ = 3145685507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3145685519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 734560 + ... + 738829.

It is an arithmetic number, because the mean of its divisors is an integer number (274050540).

Almost surely, 2^3145685515 is an apocalyptic number.

3145685515 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3145685515 is a deficient number, since it is larger than the sum of its proper divisors (1239123125).

3145685515 is a wasteful number, since it uses less digits than its factorization.

3145685515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473462.

The product of its digits is 360000, while the sum is 43.

The square root of 3145685515 is about 56086.4111438769. The cubic root of 3145685515 is about 1465.2276341407.

The spelling of 3145685515 in words is "three billion, one hundred forty-five million, six hundred eighty-five thousand, five hundred fifteen".