1641979934 has 16 divisors (see below), whose sum is σ = 2818559328. Its totient is φ = 702771552.

The previous prime is 1641979891. The next prime is 1641979967. The reversal of 1641979934 is 4399791461.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66869 + ... + 88064.

It is an arithmetic number, because the mean of its divisors is an integer number (176159958).

Almost surely, 2^1641979934 is an apocalyptic number.

1641979934 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1641979934 is a deficient number, since it is larger than the sum of its proper divisors (1176579394).

1641979934 is a wasteful number, since it uses less digits than its factorization.

1641979934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155699.

The product of its digits is 1469664, while the sum is 53.

The square root of 1641979934 is about 40521.3515816045. The cubic root of 1641979934 is about 1179.7480870840.

The spelling of 1641979934 in words is "one billion, six hundred forty-one million, nine hundred seventy-nine thousand, nine hundred thirty-four".