1538866630852 has 6 divisors (see below), whose sum is σ = 2693016603998. Its totient is φ = 769433315424.

The previous prime is 1538866630831. The next prime is 1538866630853. The reversal of 1538866630852 is 2580366688351.

It can be written as a sum of positive squares in only one way, i.e., 1512053878336 + 26812752516 = 1229656^2 + 163746^2 .

It is a super-2 number, since 2×1538866630852² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1538866630853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192358328853 + ... + 192358328860.

Almost surely, 2^{1538866630852} is an apocalyptic number.

It is an amenable number.

1538866630852 is a deficient number, since it is larger than the sum of its proper divisors (1154149973146).

1538866630852 is a wasteful number, since it uses less digits than its factorization.

1538866630852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384716657717 (or 384716657715 counting only the distinct ones).

The product of its (nonzero) digits is 49766400, while the sum is 61.

The spelling of 1538866630852 in words is "one trillion, five hundred thirty-eight billion, eight hundred sixty-six million, six hundred thirty thousand, eight hundred fifty-two".