1798940154 has 48 divisors (see below), whose sum is σ = 3977832096. Its totient is φ = 541944480.

The previous prime is 1798940123. The next prime is 1798940183. The reversal of 1798940154 is 4510498971.

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 23 ways as a sum of consecutive naturals, for example, 118437 + ... + 132759.

It is an arithmetic number, because the mean of its divisors is an integer number (82871502).

Almost surely, 2^1798940154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1798940154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1988916048).

1798940154 is an abundant number, since it is smaller than the sum of its proper divisors (2178891942).

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

1798940154 is a wasteful number, since it uses less digits than its factorization.

1798940154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14523 (or 14512 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 1798940154 is about 42413.9146271598. The cubic root of 1798940154 is about 1216.2016041869.

The spelling of 1798940154 in words is "one billion, seven hundred ninety-eight million, nine hundred forty thousand, one hundred fifty-four".