1401680378 has 24 divisors (see below), whose sum is σ = 2447745300. Its totient is φ = 600239808.

The previous prime is 1401680333. The next prime is 1401680383. The reversal of 1401680378 is 8730861041.

It can be written as a sum of positive squares in 2 ways, for example, as 1387339009 + 14341369 = 37247^2 + 3787^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135038 + ... + 145046.

Almost surely, 2^1401680378 is an apocalyptic number.

1401680378 is a deficient number, since it is larger than the sum of its proper divisors (1046064922).

1401680378 is a wasteful number, since it uses less digits than its factorization.

1401680378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11454 (or 11447 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 1401680378 is about 37439.0221293238. The cubic root of 1401680378 is about 1119.1363393888.

The spelling of 1401680378 in words is "one billion, four hundred one million, six hundred eighty thousand, three hundred seventy-eight".