19030390 has 16 divisors (see below), whose sum is σ = 34362432. Its totient is φ = 7588224.

The previous prime is 19030387. The next prime is 19030399. The reversal of 19030390 is 9303091.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19030399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547 + ... + 6193.

It is an arithmetic number, because the mean of its divisors is an integer number (2147652).

Almost surely, 2^19030390 is an apocalyptic number.

19030390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19030390 is a deficient number, since it is larger than the sum of its proper divisors (15332042).

19030390 is a wasteful number, since it uses less digits than its factorization.

19030390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5991.

The product of its (nonzero) digits is 729, while the sum is 25.

The square root of 19030390 is about 4362.3835228004. The cubic root of 19030390 is about 266.9823570288.

The spelling of 19030390 in words is "nineteen million, thirty thousand, three hundred ninety".