3865694053 has 4 divisors (see below), whose sum is σ = 4163055148. Its totient is φ = 3568332960.

The previous prime is 3865694051. The next prime is 3865694057. The reversal of 3865694053 is 3504965683.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3504965683 = 229 ⋅15305527.

It can be written as a sum of positive squares in 2 ways, for example, as 300051684 + 3565642369 = 17322^2 + 59713^2 .

It is a cyclic number.

It is not a de Polignac number, because 3865694053 - 2¹ = 3865694051 is a prime.

It is a super-2 number, since 2×3865694053² = 29887181022799133618, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3865693988 and 3865694006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3865694051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148680528 + ... + 148680553.

It is an arithmetic number, because the mean of its divisors is an integer number (1040763787).

Almost surely, 2^3865694053 is an apocalyptic number.

It is an amenable number.

3865694053 is a deficient number, since it is larger than the sum of its proper divisors (297361095).

3865694053 is a wasteful number, since it uses less digits than its factorization.

3865694053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297361094.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The square root of 3865694053 is about 62174.7058939566. The cubic root of 3865694053 is about 1569.4319625440.

The spelling of 3865694053 in words is "three billion, eight hundred sixty-five million, six hundred ninety-four thousand, fifty-three".