190232928649 has 3 divisors (see below), whose sum is σ = 190233364807. Its totient is φ = 190232492492.

The previous prime is 190232928647. The next prime is 190232928667. The reversal of 190232928649 is 946829232091.

The square root of 190232928649 is 436157.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 57104271225 + 133128657424 = 238965^2 + 364868^2 .

It is not a de Polignac number, because 190232928649 - 2¹ = 190232928647 is a prime.

It is a super-3 number, since 3×190232928649³ (a number of 35 digits) contains 333 as substring.

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 190232928649.

It is not an unprimeable number, because it can be changed into a prime (190232928647) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 218079 + ... + 654235.

Almost surely, 2^190232928649 is an apocalyptic number.

190232928649 is the 436157-th square number.

190232928649 is the 218079-th centered octagonal number.

It is an amenable number.

190232928649 is a deficient number, since it is larger than the sum of its proper divisors (436158).

190232928649 is an frugal number, since it uses more digits than its factorization.

190232928649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872314 (or 436157 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 190232928649 in words is "one hundred ninety billion, two hundred thirty-two million, nine hundred twenty-eight thousand, six hundred forty-nine".