138753169 has 4 divisors (see below), whose sum is σ = 138826240. Its totient is φ = 138680100.

The previous prime is 138753113. The next prime is 138753187. The reversal of 138753169 is 961357831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138753169 - 2¹¹ = 138751121 is a prime.

It is a super-2 number, since 2×138753169² = 38504883815085122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138753569) 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, 33609 + ... + 37510.

It is an arithmetic number, because the mean of its divisors is an integer number (34706560).

Almost surely, 2^138753169 is an apocalyptic number.

It is an amenable number.

138753169 is a deficient number, since it is larger than the sum of its proper divisors (73071).

138753169 is an equidigital number, since it uses as much as digits as its factorization.

138753169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73070.

The product of its digits is 136080, while the sum is 43.

The square root of 138753169 is about 11779.3535051802. The cubic root of 138753169 is about 517.7033440501.

The spelling of 138753169 in words is "one hundred thirty-eight million, seven hundred fifty-three thousand, one hundred sixty-nine".