2489197854 has 64 divisors (see below), whose sum is σ = 5887784448. Its totient is φ = 691632000.

The previous prime is 2489197849. The next prime is 2489197883. The reversal of 2489197854 is 4587919842.

It is a super-2 number, since 2×2489197854² = 12392211912716410632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2489197794 and 2489197803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119952 + ... + 139164.

It is an arithmetic number, because the mean of its divisors is an integer number (91996632).

Almost surely, 2^2489197854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2489197854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2943892224).

2489197854 is an abundant number, since it is smaller than the sum of its proper divisors (3398586594).

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

2489197854 is a wasteful number, since it uses less digits than its factorization.

2489197854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19393.

The product of its digits is 5806080, while the sum is 57.

The square root of 2489197854 is about 49891.8616008663. The cubic root of 2489197854 is about 1355.2512170662.

The spelling of 2489197854 in words is "two billion, four hundred eighty-nine million, one hundred ninety-seven thousand, eight hundred fifty-four".