190145784 has 64 divisors (see below), whose sum is σ = 504253440. Its totient is φ = 59621760.

The previous prime is 190145783. The next prime is 190145827. The reversal of 190145784 is 487541091.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190145783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30849 + ... + 36495.

It is an arithmetic number, because the mean of its divisors is an integer number (7878960).

Almost surely, 2^190145784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190145784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252126720).

190145784 is an abundant number, since it is smaller than the sum of its proper divisors (314107656).

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

190145784 is a wasteful number, since it uses less digits than its factorization.

190145784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5740 (or 5736 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 190145784 is about 13789.3358795846. The cubic root of 190145784 is about 575.0367049033.

The spelling of 190145784 in words is "one hundred ninety million, one hundred forty-five thousand, seven hundred eighty-four".