190640351 has 16 divisors (see below), whose sum is σ = 211507200. Its totient is φ = 170383200.

The previous prime is 190640339. The next prime is 190640377. The reversal of 190640351 is 153046091.

It is a cyclic number.

It is not a de Polignac number, because 190640351 - 2¹⁴ = 190623967 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 (190640321) 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, 374285 + ... + 374793.

It is an arithmetic number, because the mean of its divisors is an integer number (13219200).

Almost surely, 2^190640351 is an apocalyptic number.

190640351 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

190640351 is a deficient number, since it is larger than the sum of its proper divisors (20866849).

190640351 is a wasteful number, since it uses less digits than its factorization.

190640351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 190640351 is about 13807.2571859874. The cubic root of 190640351 is about 575.5348279032.

The spelling of 190640351 in words is "one hundred ninety million, six hundred forty thousand, three hundred fifty-one".