18219702 has 16 divisors (see below), whose sum is σ = 37287360. Its totient is φ = 5931912.

The previous prime is 18219697. The next prime is 18219709. The reversal of 18219702 is 20791281.

It is a self number, because there is not a number n which added to its sum of digits gives 18219702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18219709) 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, 35052 + ... + 35567.

It is an arithmetic number, because the mean of its divisors is an integer number (2330460).

Almost surely, 2^18219702 is an apocalyptic number.

18219702 is an abundant number, since it is smaller than the sum of its proper divisors (19067658).

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

18219702 is a wasteful number, since it uses less digits than its factorization.

18219702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70667.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 18219702 is about 4268.4542869756. The cubic root of 18219702 is about 263.1360936452.

The spelling of 18219702 in words is "eighteen million, two hundred nineteen thousand, seven hundred two".