1662042030 has 64 divisors (see below), whose sum is σ = 4373568000. Its totient is φ = 400878720.

The previous prime is 1662042023. The next prime is 1662042037. The reversal of 1662042030 is 302402661.

It is an interprime number because it is at equal distance from previous prime (1662042023) and next prime (1662042037).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662042037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53016 + ... + 78324.

It is an arithmetic number, because the mean of its divisors is an integer number (68337000).

Almost surely, 2^1662042030 is an apocalyptic number.

1662042030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1662042030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2186784000).

1662042030 is an abundant number, since it is smaller than the sum of its proper divisors (2711525970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1662042030 is a wasteful number, since it uses less digits than its factorization.

1662042030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25529.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1662042030 is about 40768.1497004708. The cubic root of 1662042030 is about 1184.5334630210.

Adding to 1662042030 its reverse (302402661), we get a palindrome (1964444691).

The spelling of 1662042030 in words is "one billion, six hundred sixty-two million, forty-two thousand, thirty".