1651115466 has 432 divisors, whose sum is σ = 5272244640. Its totient is φ = 367960320.

The previous prime is 1651115449. The next prime is 1651115471. The reversal of 1651115466 is 6645111561.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (21600) is a multiple of the sum of its prime divisors (108).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1651115466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 31153096 + ... + 31153148.

It is an arithmetic number, because the mean of its divisors is an integer number (12204270).

Almost surely, 2^1651115466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1651115466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2636122320).

1651115466 is an abundant number, since it is smaller than the sum of its proper divisors (3621129174).

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

1651115466 is a wasteful number, since it uses less digits than its factorization.

1651115466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 108 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 1651115466 is about 40633.9201406903. The cubic root of 1651115466 is about 1181.9319749217.

The spelling of 1651115466 in words is "one billion, six hundred fifty-one million, one hundred fifteen thousand, four hundred sixty-six".