3646878142 has 4 divisors (see below), whose sum is σ = 5470317216. Its totient is φ = 1823439070.

The previous prime is 3646878133. The next prime is 3646878149. The reversal of 3646878142 is 2418786463.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646878149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911719534 + ... + 911719537.

It is an arithmetic number, because the mean of its divisors is an integer number (1367579304).

Almost surely, 2^3646878142 is an apocalyptic number.

3646878142 is a deficient number, since it is larger than the sum of its proper divisors (1823439074).

3646878142 is a wasteful number, since it uses less digits than its factorization.

3646878142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823439073.

The product of its digits is 1548288, while the sum is 49.

The square root of 3646878142 is about 60389.3876604160. The cubic root of 3646878142 is about 1539.2426340006.

The spelling of 3646878142 in words is "three billion, six hundred forty-six million, eight hundred seventy-eight thousand, one hundred forty-two".