137743769 has 4 divisors (see below), whose sum is σ = 137783844. Its totient is φ = 137703696.

The previous prime is 137743717. The next prime is 137743799. The reversal of 137743769 is 967347731.

137743769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47265625 + 90478144 = 6875^2 + 9512^2 .

It is a cyclic number.

It is not a de Polignac number, because 137743769 - 2¹² = 137739673 is a prime.

It is a super-2 number, since 2×137743769² = 37946691796650722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137743799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14342 + ... + 21935.

It is an arithmetic number, because the mean of its divisors is an integer number (34445961).

Almost surely, 2^137743769 is an apocalyptic number.

It is an amenable number.

137743769 is a deficient number, since it is larger than the sum of its proper divisors (40075).

137743769 is an equidigital number, since it uses as much as digits as its factorization.

137743769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40074.

The product of its digits is 666792, while the sum is 47.

The square root of 137743769 is about 11736.4291417790. The cubic root of 137743769 is about 516.4448932810. Note that the first 3 decimals are identical.

The spelling of 137743769 in words is "one hundred thirty-seven million, seven hundred forty-three thousand, seven hundred sixty-nine".