190474549 has 2 divisors, whose sum is σ = 190474550. Its totient is φ = 190474548.

The previous prime is 190474547. The next prime is 190474567. The reversal of 190474549 is 945474091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150847524 + 39627025 = 12282^2 + 6295^2 .

It is a cyclic number.

It is not a de Polignac number, because 190474549 - 2¹ = 190474547 is a prime.

Together with 190474547, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190474541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95237274 + 95237275.

It is an arithmetic number, because the mean of its divisors is an integer number (95237275).

Almost surely, 2^190474549 is an apocalyptic number.

It is an amenable number.

190474549 is a deficient number, since it is larger than the sum of its proper divisors (1).

190474549 is an equidigital number, since it uses as much as digits as its factorization.

190474549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 190474549 is about 13801.2517185942. The cubic root of 190474549 is about 575.3679298630.

The spelling of 190474549 in words is "one hundred ninety million, four hundred seventy-four thousand, five hundred forty-nine".