3145863745 has 16 divisors (see below), whose sum is σ = 3819589200. Its totient is φ = 2487066624.

The previous prime is 3145863739. The next prime is 3145863817. The reversal of 3145863745 is 5473685413.

It is a Cunningham number, because it is equal to 56088²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 68277169 + 3077586576 = 8263^2 + 55476^2 .

It is a cyclic number.

It is not a de Polignac number, because 3145863745 - 2⁹ = 3145863233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3145863695 and 3145863704.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351081 + ... + 359929.

It is an arithmetic number, because the mean of its divisors is an integer number (238724325).

Almost surely, 2^3145863745 is an apocalyptic number.

It is an amenable number.

3145863745 is a deficient number, since it is larger than the sum of its proper divisors (673725455).

3145863745 is an equidigital number, since it uses as much as digits as its factorization.

3145863745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9684.

The product of its digits is 1209600, while the sum is 46.

The square root of 3145863745 is about 56088.0000089146. Note that the first 5 decimals coincide. The cubic root of 3145863745 is about 1465.2553061790.

The spelling of 3145863745 in words is "three billion, one hundred forty-five million, eight hundred sixty-three thousand, seven hundred forty-five".