19116612 has 18 divisors (see below), whose sum is σ = 48322638. Its totient is φ = 6372192.

The previous prime is 19116599. The next prime is 19116613. The reversal of 19116612 is 21661191.

It can be written as a sum of positive squares in only one way, i.e., 14930496 + 4186116 = 3864^2 + 2046^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (19116613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 265473 + ... + 265544.

It is an arithmetic number, because the mean of its divisors is an integer number (2684591).

Almost surely, 2^19116612 is an apocalyptic number.

19116612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19116612 is an abundant number, since it is smaller than the sum of its proper divisors (29206026).

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

19116612 is a wasteful number, since it uses less digits than its factorization.

19116612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531027 (or 531022 counting only the distinct ones).

The product of its digits is 648, while the sum is 27.

The square root of 19116612 is about 4372.2547958691. The cubic root of 19116612 is about 267.3849599957.

The spelling of 19116612 in words is "nineteen million, one hundred sixteen thousand, six hundred twelve".