1639980098 has 8 divisors (see below), whose sum is σ = 2589442320. Its totient is φ = 776832660.

The previous prime is 1639980049. The next prime is 1639980103. The reversal of 1639980098 is 8900899361.

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

It is a Curzon 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, 21578648 + ... + 21578723.

It is an arithmetic number, because the mean of its divisors is an integer number (323680290).

Almost surely, 2^1639980098 is an apocalyptic number.

1639980098 is a deficient number, since it is larger than the sum of its proper divisors (949462222).

1639980098 is a wasteful number, since it uses less digits than its factorization.

1639980098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43157392.

The product of its (nonzero) digits is 839808, while the sum is 53.

The square root of 1639980098 is about 40496.6677394573. The cubic root of 1639980098 is about 1179.2689376688.

The spelling of 1639980098 in words is "one billion, six hundred thirty-nine million, nine hundred eighty thousand, ninety-eight".