137980069 has 2 divisors, whose sum is σ = 137980070. Its totient is φ = 137980068.

The previous prime is 137980049. The next prime is 137980081. The reversal of 137980069 is 960089731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106193025 + 31787044 = 10305^2 + 5638^2 .

It is a cyclic number.

It is not a de Polignac number, because 137980069 - 2¹³ = 137971877 is a prime.

It is a super-2 number, since 2×137980069² = 38076998882489522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137980009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68990034 + 68990035.

It is an arithmetic number, because the mean of its divisors is an integer number (68990035).

Almost surely, 2^137980069 is an apocalyptic number.

It is an amenable number.

137980069 is a deficient number, since it is larger than the sum of its proper divisors (1).

137980069 is an equidigital number, since it uses as much as digits as its factorization.

137980069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 137980069 is about 11746.4917741426. The cubic root of 137980069 is about 516.7400456769.

The spelling of 137980069 in words is "one hundred thirty-seven million, nine hundred eighty thousand, sixty-nine".