1998966026 has 8 divisors (see below), whose sum is σ = 3068180544. Its totient is φ = 976239180.

The previous prime is 1998966019. The next prime is 1998966127. The reversal of 1998966026 is 6206698991.

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

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, 11621810 + ... + 11621981.

It is an arithmetic number, because the mean of its divisors is an integer number (383522568).

Almost surely, 2^1998966026 is an apocalyptic number.

1998966026 is a deficient number, since it is larger than the sum of its proper divisors (1069214518).

1998966026 is a wasteful number, since it uses less digits than its factorization.

1998966026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23243836.

The product of its (nonzero) digits is 2519424, while the sum is 56.

The square root of 1998966026 is about 44709.7978747388. The cubic root of 1998966026 is about 1259.7038915333.

The spelling of 1998966026 in words is "one billion, nine hundred ninety-eight million, nine hundred sixty-six thousand, twenty-six".