137881049 has 2 divisors, whose sum is σ = 137881050. Its totient is φ = 137881048.

The previous prime is 137881039. The next prime is 137881057. The reversal of 137881049 is 940188731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115175824 + 22705225 = 10732^2 + 4765^2 .

It is an emirp because it is prime and its reverse (940188731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137881049 is a prime.

It is a super-2 number, since 2×137881049² = 38022367346680802, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 137880997 and 137881015.

It is not a weakly prime, because it can be changed into another prime (137881039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68940524 + 68940525.

It is an arithmetic number, because the mean of its divisors is an integer number (68940525).

Almost surely, 2^137881049 is an apocalyptic number.

It is an amenable number.

137881049 is a deficient number, since it is larger than the sum of its proper divisors (1).

137881049 is an equidigital number, since it uses as much as digits as its factorization.

137881049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 137881049 is about 11742.2761422137. The cubic root of 137881049 is about 516.6164050078.

The spelling of 137881049 in words is "one hundred thirty-seven million, eight hundred eighty-one thousand, forty-nine".