3145738 has 4 divisors (see below), whose sum is σ = 4718610. Its totient is φ = 1572868.

The previous prime is 3145721. The next prime is 3145739. The reversal of 3145738 is 8375413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8375413 = 181 ⋅46273.

It can be written as a sum of positive squares in only one way, i.e., 3143529 + 2209 = 1773^2 + 47^2 .

It is not an unprimeable number, because it can be changed into a prime (3145739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786433 + ... + 786436.

Almost surely, 2^3145738 is an apocalyptic number.

3145738 is a deficient number, since it is larger than the sum of its proper divisors (1572872).

3145738 is a wasteful number, since it uses less digits than its factorization.

3145738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572871.

The product of its digits is 10080, while the sum is 31.

The square root of 3145738 is about 1773.6228460414. The cubic root of 3145738 is about 146.5235783085.

It can be divided in two parts, 3145 and 738, that added together give a palindrome (3883).

The spelling of 3145738 in words is "three million, one hundred forty-five thousand, seven hundred thirty-eight".