1662215423 has 8 divisors (see below), whose sum is σ = 1829374416. Its totient is φ = 1497731200.

The previous prime is 1662215419. The next prime is 1662215441. The reversal of 1662215423 is 3245122661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1662215423 - 2² = 1662215419 is a prime.

It is a super-2 number, since 2×1662215423² = 5525920224918137858, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1662215423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662215473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 667388 + ... + 669873.

It is an arithmetic number, because the mean of its divisors is an integer number (228671802).

Almost surely, 2^1662215423 is an apocalyptic number.

1662215423 is a deficient number, since it is larger than the sum of its proper divisors (167158993).

1662215423 is a wasteful number, since it uses less digits than its factorization.

1662215423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337385.

The product of its digits is 17280, while the sum is 32.

The square root of 1662215423 is about 40770.2762193243. The cubic root of 1662215423 is about 1184.5746538503.

The spelling of 1662215423 in words is "one billion, six hundred sixty-two million, two hundred fifteen thousand, four hundred twenty-three".