1641940449470 has 8 divisors (see below), whose sum is σ = 2955492809064. Its totient is φ = 656776179784.

The previous prime is 1641940449469. The next prime is 1641940449509. The reversal of 1641940449470 is 749440491461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82097022464 + ... + 82097022483.

It is an arithmetic number, because the mean of its divisors is an integer number (369436601133).

Almost surely, 2^{1641940449470} is an apocalyptic number.

1641940449470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1641940449470 is a deficient number, since it is larger than the sum of its proper divisors (1313552359594).

1641940449470 is a wasteful number, since it uses less digits than its factorization.

1641940449470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164194044954.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 1641940449470 in words is "one trillion, six hundred forty-one billion, nine hundred forty million, four hundred forty-nine thousand, four hundred seventy".