1537394166889 has 9 divisors (see below), whose sum is σ = 1788407392701. Its totient is φ = 1317758989260.

The previous prime is 1537394166871. The next prime is 1537394166901. The reversal of 1537394166889 is 9886614937351.

The square root of 1537394166889 is 1239917.

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

It is not a de Polignac number, because 1537394166889 - 2¹³ = 1537394158697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1537394166829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8590854 + ... + 8767984.

Almost surely, 2^{1537394166889} is an apocalyptic number.

1537394166889 is the 1239917-th square number.

1537394166889 is the 619959-th centered octagonal number.

It is an amenable number.

1537394166889 is a deficient number, since it is larger than the sum of its proper divisors (251013225812).

1537394166889 is an frugal number, since it uses more digits than its factorization.

1537394166889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354276 (or 177138 counting only the distinct ones).

The product of its digits is 235146240, while the sum is 70.

The spelling of 1537394166889 in words is "one trillion, five hundred thirty-seven billion, three hundred ninety-four million, one hundred sixty-six thousand, eight hundred eighty-nine".