3918372651 has 20 divisors (see below), whose sum is σ = 5919150600. Its totient is φ = 2582892576.

The previous prime is 3918372617. The next prime is 3918372677. The reversal of 3918372651 is 1562738193.

It is not a de Polignac number, because 3918372651 - 2¹⁵ = 3918339883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3918372597 and 3918372606.

It is not an unprimeable number, because it can be changed into a prime (3918372611) 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 19 ways as a sum of consecutive naturals, for example, 264561 + ... + 278978.

It is an arithmetic number, because the mean of its divisors is an integer number (295957530).

Almost surely, 2^3918372651 is an apocalyptic number.

3918372651 is a deficient number, since it is larger than the sum of its proper divisors (2000777949).

3918372651 is an equidigital number, since it uses as much as digits as its factorization.

3918372651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543640 (or 543631 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 3918372651 is about 62596.9060816907. The cubic root of 3918372651 is about 1576.5288121397.

The spelling of 3918372651 in words is "three billion, nine hundred eighteen million, three hundred seventy-two thousand, six hundred fifty-one".