137944945 has 8 divisors (see below), whose sum is σ = 166645800. Its totient is φ = 109614720.

The previous prime is 137944943. The next prime is 137944957. The reversal of 137944945 is 549449731.

It can be written as a sum of positive squares in 4 ways, for example, as 23409 + 137921536 = 153^2 + 11744^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 137944945 - 2¹ = 137944943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 137944895 and 137944904.

It is not an unprimeable number, because it can be changed into a prime (137944943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91836 + ... + 93325.

It is an arithmetic number, because the mean of its divisors is an integer number (20830725).

Almost surely, 2^137944945 is an apocalyptic number.

It is an amenable number.

137944945 is a deficient number, since it is larger than the sum of its proper divisors (28700855).

137944945 is a wasteful number, since it uses less digits than its factorization.

137944945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185315.

The product of its digits is 544320, while the sum is 46.

The square root of 137944945 is about 11744.9965942950. The cubic root of 137944945 is about 516.6961950981.

The spelling of 137944945 in words is "one hundred thirty-seven million, nine hundred forty-four thousand, nine hundred forty-five".