19493850 has 24 divisors (see below), whose sum is σ = 48345120. Its totient is φ = 5198320.

The previous prime is 19493839. The next prime is 19493869. The reversal of 19493850 is 5839491.

It is a junction number, because it is equal to n+sod(n) for n = 19493799 and 19493808.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64830 + ... + 65129.

It is an arithmetic number, because the mean of its divisors is an integer number (2014380).

Almost surely, 2^19493850 is an apocalyptic number.

19493850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19493850 is an abundant number, since it is smaller than the sum of its proper divisors (28851270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19493850 is a wasteful number, since it uses less digits than its factorization.

19493850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129974 (or 129969 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 19493850 is about 4415.1840278747. The cubic root of 19493850 is about 269.1323312551.

The spelling of 19493850 in words is "nineteen million, four hundred ninety-three thousand, eight hundred fifty".