1661063338 has 16 divisors (see below), whose sum is σ = 2719352736. Its totient is φ = 754681840.

The previous prime is 1661063333. The next prime is 1661063347. The reversal of 1661063338 is 8333601661.

It is a junction number, because it is equal to n+sod(n) for n = 1661063297 and 1661063306.

It is not an unprimeable number, because it can be changed into a prime (1661063333) 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, 35145 + ... + 67507.

It is an arithmetic number, because the mean of its divisors is an integer number (169959546).

Almost surely, 2^1661063338 is an apocalyptic number.

1661063338 is a deficient number, since it is larger than the sum of its proper divisors (1058289398).

1661063338 is a wasteful number, since it uses less digits than its factorization.

1661063338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34709.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 1661063338 is about 40756.1447882402. The cubic root of 1661063338 is about 1184.3009135372.

Adding to 1661063338 its reverse (8333601661), we get a palindrome (9994664999).

The spelling of 1661063338 in words is "one billion, six hundred sixty-one million, sixty-three thousand, three hundred thirty-eight".