1110001398 has 64 divisors (see below), whose sum is σ = 2490504192. Its totient is φ = 326904480.

The previous prime is 1110001393. The next prime is 1110001421. The reversal of 1110001398 is 8931000111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110001393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 643365 + ... + 645087.

It is an arithmetic number, because the mean of its divisors is an integer number (38914128).

Almost surely, 2^1110001398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1110001398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1245252096).

1110001398 is an abundant number, since it is smaller than the sum of its proper divisors (1380502794).

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

1110001398 is a wasteful number, since it uses less digits than its factorization.

1110001398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009.

The product of its (nonzero) digits is 216, while the sum is 24.

The square root of 1110001398 is about 33316.6834784016. The cubic root of 1110001398 is about 1035.3992401292.

It can be divided in two parts, 11100013 and 98, that added together give a palindrome (11100111).

The spelling of 1110001398 in words is "one billion, one hundred ten million, one thousand, three hundred ninety-eight".