1001998411 has 4 divisors (see below), whose sum is σ = 1060939512. Its totient is φ = 943057312.

The previous prime is 1001998391. The next prime is 1001998483. The reversal of 1001998411 is 1148991001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1148991001 = 149 ⋅7711349.

It is a cyclic number.

It is not a de Polignac number, because 1001998411 - 2⁵ = 1001998379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001998211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29470525 + ... + 29470558.

It is an arithmetic number, because the mean of its divisors is an integer number (265234878).

Almost surely, 2^1001998411 is an apocalyptic number.

1001998411 is a deficient number, since it is larger than the sum of its proper divisors (58941101).

1001998411 is an equidigital number, since it uses as much as digits as its factorization.

1001998411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58941100.

The product of its (nonzero) digits is 2592, while the sum is 34.

The square root of 1001998411 is about 31654.3584834695. The cubic root of 1001998411 is about 1000.6656937535.

The spelling of 1001998411 in words is "one billion, one million, nine hundred ninety-eight thousand, four hundred eleven".