538952991946 has 4 divisors (see below), whose sum is σ = 808429487922. Its totient is φ = 269476495972.

The previous prime is 538952991943. The next prime is 538952991947. The reversal of 538952991946 is 649199259835.

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

It can be written as a sum of positive squares in only one way, i.e., 450360445921 + 88592546025 = 671089^2 + 297645^2 .

It is not an unprimeable number, because it can be changed into a prime (538952991943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134738247985 + ... + 134738247988.

Almost surely, 2^538952991946 is an apocalyptic number.

538952991946 is a deficient number, since it is larger than the sum of its proper divisors (269476495976).

538952991946 is a wasteful number, since it uses less digits than its factorization.

538952991946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269476495975.

The product of its digits is 188956800, while the sum is 70.

The spelling of 538952991946 in words is "five hundred thirty-eight billion, nine hundred fifty-two million, nine hundred ninety-one thousand, nine hundred forty-six".