19316830 has 32 divisors (see below), whose sum is σ = 37749600. Its totient is φ = 7074432.

The previous prime is 19316821. The next prime is 19316831. The reversal of 19316830 is 3861391.

It is a junction number, because it is equal to n+sod(n) for n = 19316792 and 19316801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19316831) 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 15 ways as a sum of consecutive naturals, for example, 17536 + ... + 18604.

It is an arithmetic number, because the mean of its divisors is an integer number (1179675).

Almost surely, 2^19316830 is an apocalyptic number.

19316830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19316830 is the 2780-th heptagonal number.

19316830 is a deficient number, since it is larger than the sum of its proper divisors (18432770).

19316830 is a wasteful number, since it uses less digits than its factorization.

19316830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 19316830 is about 4395.0915803883. The cubic root of 19316830 is about 268.3152060934.

The spelling of 19316830 in words is "nineteen million, three hundred sixteen thousand, eight hundred thirty".