30190091 has 8 divisors (see below), whose sum is σ = 30528000. Its totient is φ = 29854440.

The previous prime is 30190081. The next prime is 30190141. The reversal of 30190091 is 19009103.

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 30190091 - 2²² = 25995787 is a prime.

It is a super-2 number, since 2×30190091² = 1822883189176562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30190081) 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, 41630 + ... + 42348.

It is an arithmetic number, because the mean of its divisors is an integer number (3816000).

Almost surely, 2^30190091 is an apocalyptic number.

30190091 is a deficient number, since it is larger than the sum of its proper divisors (337909).

30190091 is a wasteful number, since it uses less digits than its factorization.

30190091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 30190091 is about 5494.5510280641. The cubic root of 30190091 is about 311.3781547818.

Adding to 30190091 its reverse (19009103), we get a palindrome (49199194).

The spelling of 30190091 in words is "thirty million, one hundred ninety thousand, ninety-one".