19492986 has 16 divisors (see below), whose sum is σ = 40243968. Its totient is φ = 6288000.

The previous prime is 19492981. The next prime is 19492987. The reversal of 19492986 is 68929491.

It is not an unprimeable number, because it can be changed into a prime (19492981) 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, 52215 + ... + 52586.

It is an arithmetic number, because the mean of its divisors is an integer number (2515248).

Almost surely, 2^19492986 is an apocalyptic number.

19492986 is an abundant number, since it is smaller than the sum of its proper divisors (20750982).

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

19492986 is a wasteful number, since it uses less digits than its factorization.

19492986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104837.

The product of its digits is 279936, while the sum is 48.

The square root of 19492986 is about 4415.0861826243. The cubic root of 19492986 is about 269.1283550648.

The spelling of 19492986 in words is "nineteen million, four hundred ninety-two thousand, nine hundred eighty-six".