651482491 has 8 divisors (see below), whose sum is σ = 711169200. Its totient is φ = 591872640.

The previous prime is 651482417. The next prime is 651482549. The reversal of 651482491 is 194284156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 651482491 - 2¹⁷ = 651351419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (651482411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 706 + ... + 36103.

It is an arithmetic number, because the mean of its divisors is an integer number (88896150).

Almost surely, 2^651482491 is an apocalyptic number.

651482491 is a deficient number, since it is larger than the sum of its proper divisors (59686709).

651482491 is a wasteful number, since it uses less digits than its factorization.

651482491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38429.

The product of its digits is 69120, while the sum is 40.

The square root of 651482491 is about 25524.1550496779. The cubic root of 651482491 is about 866.8971651377.

The spelling of 651482491 in words is "six hundred fifty-one million, four hundred eighty-two thousand, four hundred ninety-one".