190212865956 has 27 divisors (see below), whose sum is σ = 480822470401. Its totient is φ = 63403416384.

The previous prime is 190212865951. The next prime is 190212865967. The reversal of 190212865956 is 659568212091.

The square root of 190212865956 is 436134.

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

190212865956 is a `hidden beast` number, since 1 + 9 + 0 + 21 + 28 + 6 + 595 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16623976356 + 173588889600 = 128934^2 + 416640^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190212865951) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2580460 + ... + 2653148.

Almost surely, 2^190212865956 is an apocalyptic number.

190212865956 is the 436134-th square number.

It is an amenable number.

190212865956 is an abundant number, since it is smaller than the sum of its proper divisors (290609604445).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

190212865956 is an frugal number, since it uses more digits than its factorization.

190212865956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145388 (or 72694 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 54.

The spelling of 190212865956 in words is "one hundred ninety billion, two hundred twelve million, eight hundred sixty-five thousand, nine hundred fifty-six".