1662652423 has 4 divisors (see below), whose sum is σ = 1662739168. Its totient is φ = 1662565680.

The previous prime is 1662652337. The next prime is 1662652429. The reversal of 1662652423 is 3242562661.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3242562661 = 13 ⋅249427897.

It is a cyclic number.

It is not a de Polignac number, because 1662652423 - 2²¹ = 1660555271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662652429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486 + ... + 57667.

It is an arithmetic number, because the mean of its divisors is an integer number (415684792).

Almost surely, 2^1662652423 is an apocalyptic number.

1662652423 is a deficient number, since it is larger than the sum of its proper divisors (86745).

1662652423 is an equidigital number, since it uses as much as digits as its factorization.

1662652423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86744.

The product of its digits is 103680, while the sum is 37.

The square root of 1662652423 is about 40775.6351636612. The cubic root of 1662652423 is about 1184.6784538268.

The spelling of 1662652423 in words is "one billion, six hundred sixty-two million, six hundred fifty-two thousand, four hundred twenty-three".