1662168862 has 4 divisors (see below), whose sum is σ = 2493253296. Its totient is φ = 831084430.

The previous prime is 1662168857. The next prime is 1662168877. The reversal of 1662168862 is 2688612661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2688612661 = 7 ⋅384087523.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415542214 + ... + 415542217.

It is an arithmetic number, because the mean of its divisors is an integer number (623313324).

Almost surely, 2^1662168862 is an apocalyptic number.

1662168862 is a deficient number, since it is larger than the sum of its proper divisors (831084434).

1662168862 is an equidigital number, since it uses as much as digits as its factorization.

1662168862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831084433.

The product of its digits is 331776, while the sum is 46.

The square root of 1662168862 is about 40769.7051988361. The cubic root of 1662168862 is about 1184.5635932110.

The spelling of 1662168862 in words is "one billion, six hundred sixty-two million, one hundred sixty-eight thousand, eight hundred sixty-two".