1651725632 has 112 divisors (see below), whose sum is σ = 3647846400. Its totient is φ = 738823680.

The previous prime is 1651725599. The next prime is 1651725679. The reversal of 1651725632 is 2365271561.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1620419 + ... + 1621437.

Almost surely, 2^1651725632 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 1651725632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1823923200).

1651725632 is an abundant number, since it is smaller than the sum of its proper divisors (1996120768).

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

1651725632 is a wasteful number, since it uses less digits than its factorization.

1651725632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124 (or 1114 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 1651725632 is about 40641.4275339831. The cubic root of 1651725632 is about 1182.0775504235.

The spelling of 1651725632 in words is "one billion, six hundred fifty-one million, seven hundred twenty-five thousand, six hundred thirty-two".