190740551 has 4 divisors (see below), whose sum is σ = 196893504. Its totient is φ = 184587600.

The previous prime is 190740547. The next prime is 190740581. The reversal of 190740551 is 155047091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155047091 = 1321 ⋅117371.

It is a cyclic number.

It is not a de Polignac number, because 190740551 - 2² = 190740547 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 (190740581) 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, 3076430 + ... + 3076491.

It is an arithmetic number, because the mean of its divisors is an integer number (49223376).

Almost surely, 2^190740551 is an apocalyptic number.

190740551 is a deficient number, since it is larger than the sum of its proper divisors (6152953).

190740551 is an equidigital number, since it uses as much as digits as its factorization.

190740551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6152952.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 190740551 is about 13810.8852359289. The cubic root of 190740551 is about 575.6356433723.

The spelling of 190740551 in words is "one hundred ninety million, seven hundred forty thousand, five hundred fifty-one".