1373738646 has 32 divisors (see below), whose sum is σ = 3305237760. Its totient is φ = 371838816.

The previous prime is 1373738623. The next prime is 1373738677. The reversal of 1373738646 is 6468373731.

It is a junction number, because it is equal to n+sod(n) for n = 1373738595 and 1373738604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 859941 + ... + 861536.

It is an arithmetic number, because the mean of its divisors is an integer number (103288680).

Almost surely, 2^1373738646 is an apocalyptic number.

1373738646 is an abundant number, since it is smaller than the sum of its proper divisors (1931499114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1373738646 is a wasteful number, since it uses less digits than its factorization.

1373738646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721508.

The product of its digits is 1524096, while the sum is 48.

The square root of 1373738646 is about 37063.9804392351. The cubic root of 1373738646 is about 1111.6499138410.

The spelling of 1373738646 in words is "one billion, three hundred seventy-three million, seven hundred thirty-eight thousand, six hundred forty-six".