190940357 has 4 divisors (see below), whose sum is σ = 191005260. Its totient is φ = 190875456.

The previous prime is 190940303. The next prime is 190940359. The reversal of 190940357 is 753049091.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 165225316 + 25715041 = 12854^2 + 5071^2 .

It is a cyclic number.

It is not a de Polignac number, because 190940357 - 2⁶ = 190940293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190940357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190940359) 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, 27818 + ... + 33995.

It is an arithmetic number, because the mean of its divisors is an integer number (47751315).

Almost surely, 2^190940357 is an apocalyptic number.

It is an amenable number.

190940357 is a deficient number, since it is larger than the sum of its proper divisors (64903).

190940357 is an equidigital number, since it uses as much as digits as its factorization.

190940357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64902.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 190940357 is about 13818.1169845967. The cubic root of 190940357 is about 575.8365713125.

The spelling of 190940357 in words is "one hundred ninety million, nine hundred forty thousand, three hundred fifty-seven".