2155482786 has 16 divisors (see below), whose sum is σ = 4319214624. Its totient is φ = 717119424.

The previous prime is 2155482757. The next prime is 2155482821. The reversal of 2155482786 is 6872845512.

It is a super-2 number, since 2×2155482786² = 9292212081484643592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340311 + ... + 346586.

It is an arithmetic number, because the mean of its divisors is an integer number (269950914).

Almost surely, 2^2155482786 is an apocalyptic number.

2155482786 is an abundant number, since it is smaller than the sum of its proper divisors (2163731838).

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

2155482786 is a wasteful number, since it uses less digits than its factorization.

2155482786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687425.

The product of its digits is 1075200, while the sum is 48.

The square root of 2155482786 is about 46427.1772348912. The cubic root of 2155482786 is about 1291.7590700698.

The spelling of 2155482786 in words is "two billion, one hundred fifty-five million, four hundred eighty-two thousand, seven hundred eighty-six".