1683629427 has 4 divisors (see below), whose sum is σ = 2244839240. Its totient is φ = 1122419616.

The previous prime is 1683629419. The next prime is 1683629449. The reversal of 1683629427 is 7249263861.

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

It is not a de Polignac number, because 1683629427 - 2³ = 1683629419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1683629407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280604902 + ... + 280604907.

It is an arithmetic number, because the mean of its divisors is an integer number (561209810).

Almost surely, 2^1683629427 is an apocalyptic number.

1683629427 is a deficient number, since it is larger than the sum of its proper divisors (561209813).

1683629427 is an equidigital number, since it uses as much as digits as its factorization.

1683629427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561209812.

The product of its digits is 870912, while the sum is 48.

The square root of 1683629427 is about 41032.0536532112. The cubic root of 1683629427 is about 1189.6398474643.

The spelling of 1683629427 in words is "one billion, six hundred eighty-three million, six hundred twenty-nine thousand, four hundred twenty-seven".