137789378 has 4 divisors (see below), whose sum is σ = 206684070. Its totient is φ = 68894688.

The previous prime is 137789371. The next prime is 137789381. The reversal of 137789378 is 873987731.

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., 136585969 + 1203409 = 11687^2 + 1097^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (137789371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34447343 + ... + 34447346.

Almost surely, 2^137789378 is an apocalyptic number.

137789378 is a deficient number, since it is larger than the sum of its proper divisors (68894692).

137789378 is an equidigital number, since it uses as much as digits as its factorization.

137789378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68894691.

The product of its digits is 1778112, while the sum is 53.

The square root of 137789378 is about 11738.3720336340. The cubic root of 137789378 is about 516.5018878394.

The spelling of 137789378 in words is "one hundred thirty-seven million, seven hundred eighty-nine thousand, three hundred seventy-eight".