652981851 has 32 divisors (see below), whose sum is σ = 987840000. Its totient is φ = 426177504.

The previous prime is 652981843. The next prime is 652981859. The reversal of 652981851 is 158189256.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (652981843) and next prime (652981859).

It is not a de Polignac number, because 652981851 - 2³ = 652981843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 652981797 and 652981806.

It is not an unprimeable number, because it can be changed into a prime (652981859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 466050 + ... + 467448.

It is an arithmetic number, because the mean of its divisors is an integer number (30870000).

Almost surely, 2^652981851 is an apocalyptic number.

652981851 is a deficient number, since it is larger than the sum of its proper divisors (334858149).

652981851 is a wasteful number, since it uses less digits than its factorization.

652981851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760 (or 1754 counting only the distinct ones).

The product of its digits is 172800, while the sum is 45.

The square root of 652981851 is about 25553.5095632674. The cubic root of 652981851 is about 867.5616982531.

The spelling of 652981851 in words is "six hundred fifty-two million, nine hundred eighty-one thousand, eight hundred fifty-one".