137851081 has 9 divisors (see below), whose sum is σ = 140935341. Its totient is φ = 134833644.

The previous prime is 137851069. The next prime is 137851117. The reversal of 137851081 is 180158731.

The square root of 137851081 is 11741.

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

It is not a de Polignac number, because 137851081 - 2¹³ = 137842889 is a prime.

It is a super-4 number, since 4×137851081⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137851001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 692620 + ... + 692818.

Almost surely, 2^137851081 is an apocalyptic number.

137851081 is the 11741-st square number.

137851081 is the 5871-st centered octagonal number.

It is an amenable number.

137851081 is a deficient number, since it is larger than the sum of its proper divisors (3084260).

137851081 is an frugal number, since it uses more digits than its factorization.

137851081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 34.

The cubic root of 137851081 is about 516.5789739943.

The spelling of 137851081 in words is "one hundred thirty-seven million, eight hundred fifty-one thousand, eighty-one".