137784734 has 4 divisors (see below), whose sum is σ = 206677104. Its totient is φ = 68892366.

The previous prime is 137784721. The next prime is 137784737. The reversal of 137784734 is 437487731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 437487731 = 131 ⋅3339601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137784737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34446182 + ... + 34446185.

It is an arithmetic number, because the mean of its divisors is an integer number (51669276).

Almost surely, 2^137784734 is an apocalyptic number.

137784734 is a deficient number, since it is larger than the sum of its proper divisors (68892370).

137784734 is an equidigital number, since it uses as much as digits as its factorization.

137784734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68892369.

The product of its digits is 395136, while the sum is 44.

The square root of 137784734 is about 11738.1742191876. The cubic root of 137784734 is about 516.4960851141.

The spelling of 137784734 in words is "one hundred thirty-seven million, seven hundred eighty-four thousand, seven hundred thirty-four".