653946338 has 4 divisors (see below), whose sum is σ = 980919510. Its totient is φ = 326973168.

The previous prime is 653946329. The next prime is 653946343. The reversal of 653946338 is 833649356.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 475109209 + 178837129 = 21797^2 + 13373^2 .

It is a super-2 number, since 2×653946338² = 855291625967220488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 653946292 and 653946301.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163486583 + ... + 163486586.

Almost surely, 2^653946338 is an apocalyptic number.

653946338 is a deficient number, since it is larger than the sum of its proper divisors (326973172).

653946338 is a wasteful number, since it uses less digits than its factorization.

653946338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326973171.

The product of its digits is 1399680, while the sum is 47.

The square root of 653946338 is about 25572.3745084417. The cubic root of 653946338 is about 867.9886321927.

The spelling of 653946338 in words is "six hundred fifty-three million, nine hundred forty-six thousand, three hundred thirty-eight".