190781148 has 24 divisors (see below), whose sum is σ = 445954320. Its totient is φ = 63479680.

The previous prime is 190781137. The next prime is 190781167. The reversal of 190781148 is 841187091.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7143 + ... + 20798.

It is an arithmetic number, because the mean of its divisors is an integer number (18581430).

Almost surely, 2^190781148 is an apocalyptic number.

It is an amenable number.

190781148 is an abundant number, since it is smaller than the sum of its proper divisors (255173172).

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

190781148 is a wasteful number, since it uses less digits than its factorization.

190781148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28517 (or 28515 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 39.

The square root of 190781148 is about 13812.3549042153. The cubic root of 190781148 is about 575.6764796851.

The spelling of 190781148 in words is "one hundred ninety million, seven hundred eighty-one thousand, one hundred forty-eight".