137168639 has 2 divisors, whose sum is σ = 137168640. Its totient is φ = 137168638.

The previous prime is 137168621. The next prime is 137168651. The reversal of 137168639 is 936861731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137168639 - 2¹² = 137164543 is a prime.

It is a super-2 number, since 2×137168639² = 37630471050224642, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 137168639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37168639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68584319 + 68584320.

It is an arithmetic number, because the mean of its divisors is an integer number (68584320).

Almost surely, 2^137168639 is an apocalyptic number.

137168639 is a deficient number, since it is larger than the sum of its proper divisors (1).

137168639 is an equidigital number, since it uses as much as digits as its factorization.

137168639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 137168639 is about 11711.9015962396. The cubic root of 137168639 is about 515.7251092260.

The spelling of 137168639 in words is "one hundred thirty-seven million, one hundred sixty-eight thousand, six hundred thirty-nine".