1998701299 has 4 divisors (see below), whose sum is σ = 2284230064. Its totient is φ = 1713172536.

The previous prime is 1998701293. The next prime is 1998701303. The reversal of 1998701299 is 9921078991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1998701299 - 2¹¹ = 1998699251 is a prime.

It is a super-4 number, since 4×1998701299⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1998701293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142764372 + ... + 142764385.

It is an arithmetic number, because the mean of its divisors is an integer number (571057516).

Almost surely, 2^1998701299 is an apocalyptic number.

1998701299 is a deficient number, since it is larger than the sum of its proper divisors (285528765).

1998701299 is an equidigital number, since it uses as much as digits as its factorization.

1998701299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285528764.

The product of its (nonzero) digits is 734832, while the sum is 55.

The square root of 1998701299 is about 44706.8372735088. The cubic root of 1998701299 is about 1259.6482807242.

It can be divided in two parts, 1998701 and 299, that added together give a triangular number (1999000 = T₁₉₉₉).

The spelling of 1998701299 in words is "one billion, nine hundred ninety-eight million, seven hundred one thousand, two hundred ninety-nine".