19068813 has 24 divisors (see below), whose sum is σ = 29143296. Its totient is φ = 11995200.

The previous prime is 19068811. The next prime is 19068821. The reversal of 19068813 is 31886091.

It is not a de Polignac number, because 19068813 - 2¹ = 19068811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19068811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10606 + ... + 12272.

It is an arithmetic number, because the mean of its divisors is an integer number (1214304).

Almost surely, 2^19068813 is an apocalyptic number.

It is an amenable number.

19068813 is a deficient number, since it is larger than the sum of its proper divisors (10074483).

19068813 is a wasteful number, since it uses less digits than its factorization.

19068813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745 (or 1742 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 19068813 is about 4366.7852019535. The cubic root of 19068813 is about 267.1619183674.

It can be divided in two parts, 19068 and 813, that added together give a square (19881 = 141²).

The spelling of 19068813 in words is "nineteen million, sixty-eight thousand, eight hundred thirteen".