7858472646 has 16 divisors (see below), whose sum is σ = 15718719744. Its totient is φ = 2619195144.

The previous prime is 7858472639. The next prime is 7858472647. The reversal of 7858472646 is 6462748587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7858472647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12426 + ... + 125981.

It is an arithmetic number, because the mean of its divisors is an integer number (982419984).

Almost surely, 2^7858472646 is an apocalyptic number.

7858472646 is an abundant number, since it is smaller than the sum of its proper divisors (7860247098).

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

7858472646 is a wasteful number, since it uses less digits than its factorization.

7858472646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147875.

The product of its digits is 18063360, while the sum is 57.

The square root of 7858472646 is about 88648.0267462283. The cubic root of 7858472646 is about 1988.1358135390.

The spelling of 7858472646 in words is "seven billion, eight hundred fifty-eight million, four hundred seventy-two thousand, six hundred forty-six".