1662166455 has 16 divisors (see below), whose sum is σ = 2799438720. Its totient is φ = 839831328.

The previous prime is 1662166453. The next prime is 1662166469. The reversal of 1662166455 is 5546612661.

It is not a de Polignac number, because 1662166455 - 2¹ = 1662166453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662166453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2915797 + ... + 2916366.

It is an arithmetic number, because the mean of its divisors is an integer number (174964920).

Almost surely, 2^1662166455 is an apocalyptic number.

1662166455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1662166455 is a deficient number, since it is larger than the sum of its proper divisors (1137272265).

1662166455 is a wasteful number, since it uses less digits than its factorization.

1662166455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5832190.

The product of its digits is 259200, while the sum is 42.

The square root of 1662166455 is about 40769.6756793576. The cubic root of 1662166455 is about 1184.5630214187.

The spelling of 1662166455 in words is "one billion, six hundred sixty-two million, one hundred sixty-six thousand, four hundred fifty-five".