19530190 has 16 divisors (see below), whose sum is σ = 35245440. Its totient is φ = 7791840.

The previous prime is 19530179. The next prime is 19530193. The reversal of 19530190 is 9103591.

It is a super-2 number, since 2×19530190² = 762856642872200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19530193) 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, 1891 + ... + 6529.

It is an arithmetic number, because the mean of its divisors is an integer number (2202840).

Almost surely, 2^19530190 is an apocalyptic number.

19530190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19530190 is a deficient number, since it is larger than the sum of its proper divisors (15715250).

19530190 is a wasteful number, since it uses less digits than its factorization.

19530190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5067.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 19530190 is about 4419.2974554786. The cubic root of 19530190 is about 269.2994642709.

The spelling of 19530190 in words is "nineteen million, five hundred thirty thousand, one hundred ninety".