2154469716 has 144 divisors (see below), whose sum is σ = 6410686464. Its totient is φ = 597362688.

The previous prime is 2154469657. The next prime is 2154469729. The reversal of 2154469716 is 6179644512.

2154469716 is a `hidden beast` number, since 2 + 1 + 544 + 6 + 97 + 16 = 666.

It is a super-2 number, since 2×2154469716² = 9283479514322241312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1294701 + ... + 1296363.

It is an arithmetic number, because the mean of its divisors is an integer number (44518656).

Almost surely, 2^2154469716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154469716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3205343232).

2154469716 is an abundant number, since it is smaller than the sum of its proper divisors (4256216748).

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

2154469716 is a wasteful number, since it uses less digits than its factorization.

2154469716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830 (or 1825 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 2154469716 is about 46416.2656403981. The cubic root of 2154469716 is about 1291.5566641490.

The spelling of 2154469716 in words is "two billion, one hundred fifty-four million, four hundred sixty-nine thousand, seven hundred sixteen".