3751945 has 8 divisors (see below), whose sum is σ = 4515336. Its totient is φ = 2992896.

The previous prime is 3751919. The next prime is 3752009. The reversal of 3751945 is 5491573.

It can be written as a sum of positive squares in 4 ways, for example, as 19321 + 3732624 = 139^2 + 1932^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-3751945 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3751945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1299 + ... + 3031.

It is an arithmetic number, because the mean of its divisors is an integer number (564417).

Almost surely, 2^3751945 is an apocalyptic number.

It is an amenable number.

3751945 is a deficient number, since it is larger than the sum of its proper divisors (763391).

3751945 is a wasteful number, since it uses less digits than its factorization.

3751945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171.

The product of its digits is 18900, while the sum is 34.

The square root of 3751945 is about 1936.9938048430. The cubic root of 3751945 is about 155.3884809540.

The spelling of 3751945 in words is "three million, seven hundred fifty-one thousand, nine hundred forty-five".