30189641657 has 32 divisors (see below), whose sum is σ = 35738959872. Its totient is φ = 24962468544.

The previous prime is 30189641653. The next prime is 30189641659. The reversal of 30189641657 is 75614698103.

It is not a de Polignac number, because 30189641657 - 2² = 30189641653 is a prime.

It is a super-2 number, since 2×30189641657² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30189641653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16344308 + ... + 16346154.

It is an arithmetic number, because the mean of its divisors is an integer number (1116842496).

Almost surely, 2^30189641657 is an apocalyptic number.

30189641657 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

30189641657 is a deficient number, since it is larger than the sum of its proper divisors (5549318215).

30189641657 is a wasteful number, since it uses less digits than its factorization.

30189641657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 30189641657 in words is "thirty billion, one hundred eighty-nine million, six hundred forty-one thousand, six hundred fifty-seven".