2155443446 has 16 divisors (see below), whose sum is σ = 3484549824. Its totient is φ = 994054464.

The previous prime is 2155443427. The next prime is 2155443457. The reversal of 2155443446 is 6443445512.

2155443446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 3266 + ... + 65738.

It is an arithmetic number, because the mean of its divisors is an integer number (217784364).

Almost surely, 2^2155443446 is an apocalyptic number.

2155443446 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2155443446 is a deficient number, since it is larger than the sum of its proper divisors (1329106378).

2155443446 is a wasteful number, since it uses less digits than its factorization.

2155443446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63815.

The product of its digits is 230400, while the sum is 38.

The square root of 2155443446 is about 46426.7535586972. The cubic root of 2155443446 is about 1291.7512113337.

Adding to 2155443446 its reverse (6443445512), we get a palindrome (8598888958).

The spelling of 2155443446 in words is "two billion, one hundred fifty-five million, four hundred forty-three thousand, four hundred forty-six".