137948306 has 4 divisors (see below), whose sum is σ = 206922462. Its totient is φ = 68974152.

The previous prime is 137948281. The next prime is 137948339. The reversal of 137948306 is 603849731.

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

It can be written as a sum of positive squares in only one way, i.e., 133287025 + 4661281 = 11545^2 + 2159^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34487075 + ... + 34487078.

Almost surely, 2^137948306 is an apocalyptic number.

137948306 is a deficient number, since it is larger than the sum of its proper divisors (68974156).

137948306 is an equidigital number, since it uses as much as digits as its factorization.

137948306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68974155.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 137948306 is about 11745.1396756275. The cubic root of 137948306 is about 516.7003914626.

The spelling of 137948306 in words is "one hundred thirty-seven million, nine hundred forty-eight thousand, three hundred six".