137903050609 has 3 divisors (see below), whose sum is σ = 137903421963. Its totient is φ = 137902679256.

The previous prime is 137903050589. The next prime is 137903050613. The reversal of 137903050609 is 906050309731.

It is a happy number.

The square root of 137903050609 is 371353.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 126639898225 + 11263152384 = 355865^2 + 106128^2 .

It is a de Polignac number, because none of the positive numbers 2^k-137903050609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137903020609) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 185677 + ... + 557029.

It is an arithmetic number, because the mean of its divisors is an integer number (45967807321).

Almost surely, 2^137903050609 is an apocalyptic number.

137903050609 is the 371353-rd square number.

137903050609 is the 185677-th centered octagonal number.

It is an amenable number.

137903050609 is a deficient number, since it is larger than the sum of its proper divisors (371354).

137903050609 is an frugal number, since it uses more digits than its factorization.

137903050609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742706 (or 371353 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 43.

The spelling of 137903050609 in words is "one hundred thirty-seven billion, nine hundred three million, fifty thousand, six hundred nine".