1379200646 has 16 divisors (see below), whose sum is σ = 2092720320. Its totient is φ = 681670080.

The previous prime is 1379200639. The next prime is 1379200649. The reversal of 1379200646 is 6460029731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379200649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54956 + ... + 76016.

It is an arithmetic number, because the mean of its divisors is an integer number (130795020).

Almost surely, 2^1379200646 is an apocalyptic number.

1379200646 is a deficient number, since it is larger than the sum of its proper divisors (713519674).

1379200646 is a wasteful number, since it uses less digits than its factorization.

1379200646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21439.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 1379200646 is about 37137.5907403806. The cubic root of 1379200646 is about 1113.1212762800.

The spelling of 1379200646 in words is "one billion, three hundred seventy-nine million, two hundred thousand, six hundred forty-six".