1651617264 has 80 divisors (see below), whose sum is σ = 4664237184. Its totient is φ = 499449600.

The previous prime is 1651617263. The next prime is 1651617283. The reversal of 1651617264 is 4627161561.

1651617264 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1651617263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273154 + ... + 279134.

Almost surely, 2^1651617264 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 1651617264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2332118592).

1651617264 is an abundant number, since it is smaller than the sum of its proper divisors (3012619920).

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

1651617264 is a wasteful number, since it uses less digits than its factorization.

1651617264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6526 (or 6520 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 1651617264 is about 40640.0942912292. The cubic root of 1651617264 is about 1182.0516982321.

The spelling of 1651617264 in words is "one billion, six hundred fifty-one million, six hundred seventeen thousand, two hundred sixty-four".