137868743 has 4 divisors (see below), whose sum is σ = 139417920. Its totient is φ = 136319568.

The previous prime is 137868683. The next prime is 137868767. The reversal of 137868743 is 347868731.

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

It is a cyclic number.

It is not a de Polignac number, because 137868743 - 2¹² = 137864647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137868943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774455 + ... + 774632.

It is an arithmetic number, because the mean of its divisors is an integer number (34854480).

Almost surely, 2^137868743 is an apocalyptic number.

137868743 is a deficient number, since it is larger than the sum of its proper divisors (1549177).

137868743 is an equidigital number, since it uses as much as digits as its factorization.

137868743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549176.

The product of its digits is 677376, while the sum is 47.

The square root of 137868743 is about 11741.7521264929. The cubic root of 137868743 is about 516.6010350671.

The spelling of 137868743 in words is "one hundred thirty-seven million, eight hundred sixty-eight thousand, seven hundred forty-three".