137905069 has 2 divisors, whose sum is σ = 137905070. Its totient is φ = 137905068.

The previous prime is 137905049. The next prime is 137905073. The reversal of 137905069 is 960509731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70056900 + 67848169 = 8370^2 + 8237^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137905069 is a prime.

It is a super-2 number, since 2×137905069² = 38035616111789522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137905039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68952534 + 68952535.

It is an arithmetic number, because the mean of its divisors is an integer number (68952535).

Almost surely, 2^137905069 is an apocalyptic number.

It is an amenable number.

137905069 is a deficient number, since it is larger than the sum of its proper divisors (1).

137905069 is an equidigital number, since it uses as much as digits as its factorization.

137905069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 137905069 is about 11743.2988976693. The cubic root of 137905069 is about 516.6464028589.

The spelling of 137905069 in words is "one hundred thirty-seven million, nine hundred five thousand, sixty-nine".