1998146526 has 32 divisors (see below), whose sum is σ = 4062182400. Its totient is φ = 655131360.

The previous prime is 1998146519. The next prime is 1998146531. The reversal of 1998146526 is 6256418991.

It is a super-3 number, since 3×1998146526³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119671 + ... + 135341.

It is an arithmetic number, because the mean of its divisors is an integer number (126943200).

Almost surely, 2^1998146526 is an apocalyptic number.

1998146526 is an abundant number, since it is smaller than the sum of its proper divisors (2064035874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1998146526 is a wasteful number, since it uses less digits than its factorization.

1998146526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16024.

The product of its digits is 933120, while the sum is 51.

The square root of 1998146526 is about 44700.6322774074. The cubic root of 1998146526 is about 1259.5317244513.

The spelling of 1998146526 in words is "one billion, nine hundred ninety-eight million, one hundred forty-six thousand, five hundred twenty-six".