194490030 has 128 divisors (see below), whose sum is σ = 570074112. Its totient is φ = 41453568.

The previous prime is 194490029. The next prime is 194490053. The reversal of 194490030 is 30094491.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 194490030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 560317 + ... + 560663.

It is an arithmetic number, because the mean of its divisors is an integer number (4453704).

Almost surely, 2^194490030 is an apocalyptic number.

194490030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 194490030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285037056).

194490030 is an abundant number, since it is smaller than the sum of its proper divisors (375584082).

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

194490030 is a wasteful number, since it uses less digits than its factorization.

194490030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 194490030 is about 13945.9682345831. The cubic root of 194490030 is about 579.3830439262.

The spelling of 194490030 in words is "one hundred ninety-four million, four hundred ninety thousand, thirty".