3091945 has 8 divisors (see below), whose sum is σ = 3720960. Its totient is φ = 2466480.

The previous prime is 3091939. The next prime is 3091961. The reversal of 3091945 is 5491903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3091945 - 2⁷ = 3091817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1750 + ... + 3040.

It is an arithmetic number, because the mean of its divisors is an integer number (465120).

Almost surely, 2^3091945 is an apocalyptic number.

It is an amenable number.

3091945 is a deficient number, since it is larger than the sum of its proper divisors (629015).

3091945 is a wasteful number, since it uses less digits than its factorization.

3091945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 3091945 is about 1758.3927320141. The cubic root of 3091945 is about 145.6835737895.

The spelling of 3091945 in words is "three million, ninety-one thousand, nine hundred forty-five".