651249148 has 12 divisors (see below), whose sum is σ = 1243293912. Its totient is φ = 296022320.

The previous prime is 651249119. The next prime is 651249169. The reversal of 651249148 is 841942156.

It is a self number, because there is not a number n which added to its sum of digits gives 651249148.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7400515 + ... + 7400602.

It is an arithmetic number, because the mean of its divisors is an integer number (103607826).

Almost surely, 2^651249148 is an apocalyptic number.

It is an amenable number.

651249148 is a deficient number, since it is larger than the sum of its proper divisors (592044764).

651249148 is a wasteful number, since it uses less digits than its factorization.

651249148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14801132 (or 14801130 counting only the distinct ones).

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

The square root of 651249148 is about 25519.5836172928. The cubic root of 651249148 is about 866.7936532533.

The spelling of 651249148 in words is "six hundred fifty-one million, two hundred forty-nine thousand, one hundred forty-eight".