3697138 has 4 divisors (see below), whose sum is σ = 5545710. Its totient is φ = 1848568.

The previous prime is 3697103. The next prime is 3697139. The reversal of 3697138 is 8317963.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8317963 = 43 ⋅193441.

It can be written as a sum of positive squares in only one way, i.e., 2152089 + 1545049 = 1467^2 + 1243^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3697097 and 3697106.

It is not an unprimeable number, because it can be changed into a prime (3697139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 924283 + ... + 924286.

Almost surely, 2^3697138 is an apocalyptic number.

3697138 is a deficient number, since it is larger than the sum of its proper divisors (1848572).

3697138 is a wasteful number, since it uses less digits than its factorization.

3697138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848571.

The product of its digits is 27216, while the sum is 37.

The square root of 3697138 is about 1922.7943207738. The cubic root of 3697138 is about 154.6281478181.

The spelling of 3697138 in words is "three million, six hundred ninety-seven thousand, one hundred thirty-eight".