19485690 has 32 divisors (see below), whose sum is σ = 53447040. Its totient is φ = 4453824.

The previous prime is 19485679. The next prime is 19485703. The reversal of 19485690 is 9658491.

It is a super-2 number, since 2×19485690² = 759384229552200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46185 + ... + 46604.

It is an arithmetic number, because the mean of its divisors is an integer number (1670220).

Almost surely, 2^19485690 is an apocalyptic number.

19485690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19485690 is an abundant number, since it is smaller than the sum of its proper divisors (33961350).

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

19485690 is a wasteful number, since it uses less digits than its factorization.

19485690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92806.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 19485690 is about 4414.2598473583. The cubic root of 19485690 is about 269.0947736609.

The spelling of 19485690 in words is "nineteen million, four hundred eighty-five thousand, six hundred ninety".