1667381403 has 16 divisors (see below), whose sum is σ = 2378224800. Its totient is φ = 1035411456.

The previous prime is 1667381327. The next prime is 1667381413. The reversal of 1667381403 is 3041837661.

It is not a de Polignac number, because 1667381403 - 2⁸ = 1667381147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1667381413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163578 + ... + 173471.

It is an arithmetic number, because the mean of its divisors is an integer number (148639050).

Almost surely, 2^1667381403 is an apocalyptic number.

1667381403 is a deficient number, since it is larger than the sum of its proper divisors (710843397).

1667381403 is a wasteful number, since it uses less digits than its factorization.

1667381403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337166.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 1667381403 is about 40833.5818046862. The cubic root of 1667381403 is about 1185.8005600006.

The spelling of 1667381403 in words is "one billion, six hundred sixty-seven million, three hundred eighty-one thousand, four hundred three".