1537170989929 has 9 divisors (see below), whose sum is σ = 1632934133751. Its totient is φ = 1446729329760.

The previous prime is 1537170989927. The next prime is 1537170989933. The reversal of 1537170989929 is 9299890717351.

The square root of 1537170989929 is 1239827.

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

It can be written as a sum of positive squares in only one way, i.e., 1196759421225 + 340411568704 = 1093965^2 + 583448^2 .

It is not a de Polignac number, because 1537170989929 - 2¹ = 1537170989927 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1537170989927) 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, 21040594 + ... + 21113524.

Almost surely, 2^{1537170989929} is an apocalyptic number.

1537170989929 is the 1239827-th square number.

1537170989929 is the 619914-th centered octagonal number.

It is an amenable number.

1537170989929 is a deficient number, since it is larger than the sum of its proper divisors (95763143822).

1537170989929 is an frugal number, since it uses more digits than its factorization.

1537170989929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145896 (or 72948 counting only the distinct ones).

The product of its (nonzero) digits is 77157360, while the sum is 70.

The spelling of 1537170989929 in words is "one trillion, five hundred thirty-seven billion, one hundred seventy million, nine hundred eighty-nine thousand, nine hundred twenty-nine".