3145385722 has 4 divisors (see below), whose sum is σ = 4718078586. Its totient is φ = 1572692860.

The previous prime is 3145385693. The next prime is 3145385731. The reversal of 3145385722 is 2275835413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2275835413 = 19991 ⋅113843.

It can be written as a sum of positive squares in only one way, i.e., 2834604081 + 310781641 = 53241^2 + 17629^2 .

It is a super-2 number, since 2×3145385722² = 19786902680322922568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786346429 + ... + 786346432.

Almost surely, 2^3145385722 is an apocalyptic number.

3145385722 is a deficient number, since it is larger than the sum of its proper divisors (1572692864).

3145385722 is a wasteful number, since it uses less digits than its factorization.

3145385722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572692863.

The product of its digits is 201600, while the sum is 40.

The square root of 3145385722 is about 56083.7384809536. The cubic root of 3145385722 is about 1465.1810858403.

The spelling of 3145385722 in words is "three billion, one hundred forty-five million, three hundred eighty-five thousand, seven hundred twenty-two".