1428166443 has 16 divisors (see below), whose sum is σ = 2081520000. Its totient is φ = 863810880.

The previous prime is 1428166427. The next prime is 1428166457. The reversal of 1428166443 is 3446618241.

It is not a de Polignac number, because 1428166443 - 2⁴ = 1428166427 is a prime.

It is a super-2 number, since 2×1428166443² = 4079318777822544498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1428166423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26898 + ... + 59831.

It is an arithmetic number, because the mean of its divisors is an integer number (130095000).

Almost surely, 2^1428166443 is an apocalyptic number.

1428166443 is a deficient number, since it is larger than the sum of its proper divisors (653353557).

1428166443 is a wasteful number, since it uses less digits than its factorization.

1428166443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87242.

The product of its digits is 110592, while the sum is 39.

The square root of 1428166443 is about 37791.0894656399. The cubic root of 1428166443 is about 1126.1414437521.

The spelling of 1428166443 in words is "one billion, four hundred twenty-eight million, one hundred sixty-six thousand, four hundred forty-three".