190151813 has 4 divisors (see below), whose sum is σ = 190204140. Its totient is φ = 190099488.

The previous prime is 190151803. The next prime is 190151849. The reversal of 190151813 is 318151091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 318151091 = 79 ⋅4027229.

It can be written as a sum of positive squares in 2 ways, for example, as 87291649 + 102860164 = 9343^2 + 10142^2 .

It is a cyclic number.

It is not a de Polignac number, because 190151813 - 2¹⁶ = 190086277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190151803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20270 + ... + 28127.

It is an arithmetic number, because the mean of its divisors is an integer number (47551035).

Almost surely, 2^190151813 is an apocalyptic number.

It is an amenable number.

190151813 is a deficient number, since it is larger than the sum of its proper divisors (52327).

190151813 is an equidigital number, since it uses as much as digits as its factorization.

190151813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52326.

The product of its (nonzero) digits is 1080, while the sum is 29.

The square root of 190151813 is about 13789.5544888151. The cubic root of 190151813 is about 575.0427824500.

The spelling of 190151813 in words is "one hundred ninety million, one hundred fifty-one thousand, eight hundred thirteen".