3648678146 has 4 divisors (see below), whose sum is σ = 5473017222. Its totient is φ = 1824339072.

The previous prime is 3648678133. The next prime is 3648678149. The reversal of 3648678146 is 6418768463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6418768463 = 101 ⋅63552163.

It can be written as a sum of positive squares in only one way, i.e., 3262123225 + 386554921 = 57115^2 + 19661^2 .

It is not an unprimeable number, because it can be changed into a prime (3648678149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 912169535 + ... + 912169538.

Almost surely, 2^3648678146 is an apocalyptic number.

3648678146 is a deficient number, since it is larger than the sum of its proper divisors (1824339076).

3648678146 is a wasteful number, since it uses less digits than its factorization.

3648678146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824339075.

The product of its digits is 4644864, while the sum is 53.

The square root of 3648678146 is about 60404.2891357890. The cubic root of 3648678146 is about 1539.4958356959.

The spelling of 3648678146 in words is "three billion, six hundred forty-eight million, six hundred seventy-eight thousand, one hundred forty-six".