1998636295 has 8 divisors (see below), whose sum is σ = 2399939280. Its totient is φ = 1597858560.

The previous prime is 1998636293. The next prime is 1998636329. The reversal of 1998636295 is 5926368991.

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

It is not a de Polignac number, because 1998636295 - 2¹ = 1998636293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998636293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122890 + ... + 138199.

It is an arithmetic number, because the mean of its divisors is an integer number (299992410).

Almost surely, 2^1998636295 is an apocalyptic number.

1998636295 is a deficient number, since it is larger than the sum of its proper divisors (401302985).

1998636295 is a wasteful number, since it uses less digits than its factorization.

1998636295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262625.

The product of its digits is 6298560, while the sum is 58.

The square root of 1998636295 is about 44706.1102647054. The cubic root of 1998636295 is about 1259.6346246792.

The spelling of 1998636295 in words is "one billion, nine hundred ninety-eight million, six hundred thirty-six thousand, two hundred ninety-five".