3915145 has 32 divisors (see below), whose sum is σ = 5483520. Its totient is φ = 2661120.

The previous prime is 3915143. The next prime is 3915157. The reversal of 3915145 is 5415193.

It is not a de Polignac number, because 3915145 - 2¹ = 3915143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3915143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58402 + ... + 58468.

It is an arithmetic number, because the mean of its divisors is an integer number (171360).

Almost surely, 2^3915145 is an apocalyptic number.

It is an amenable number.

3915145 is a deficient number, since it is larger than the sum of its proper divisors (1568375).

3915145 is a wasteful number, since it uses less digits than its factorization.

3915145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145.

The product of its digits is 2700, while the sum is 28.

The square root of 3915145 is about 1978.6725348071. The cubic root of 3915145 is about 157.6095819241.

The spelling of 3915145 in words is "three million, nine hundred fifteen thousand, one hundred forty-five".