651018948 has 24 divisors (see below), whose sum is σ = 1526683200. Its totient is φ = 215915040.

The previous prime is 651018947. The next prime is 651018971. The reversal of 651018948 is 849810156.

It is not an unprimeable number, because it can be changed into a prime (651018943) 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, 133923 + ... + 138698.

It is an arithmetic number, because the mean of its divisors is an integer number (63611800).

Almost surely, 2^651018948 is an apocalyptic number.

It is an amenable number.

651018948 is an abundant number, since it is smaller than the sum of its proper divisors (875664252).

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

651018948 is a wasteful number, since it uses less digits than its factorization.

651018948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272827 (or 272825 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 651018948 is about 25515.0729569798. The cubic root of 651018948 is about 866.6915113851.

The spelling of 651018948 in words is "six hundred fifty-one million, eighteen thousand, nine hundred forty-eight".