138751077 has 4 divisors (see below), whose sum is σ = 185001440. Its totient is φ = 92500716.

The previous prime is 138751069. The next prime is 138751079. The reversal of 138751077 is 770157831.

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 not a de Polignac number, because 138751077 - 2³ = 138751069 is a prime.

It is a super-2 number, since 2×138751077² = 38503722737319858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138751079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23125177 + ... + 23125182.

It is an arithmetic number, because the mean of its divisors is an integer number (46250360).

Almost surely, 2^138751077 is an apocalyptic number.

It is an amenable number.

138751077 is a deficient number, since it is larger than the sum of its proper divisors (46250363).

138751077 is an equidigital number, since it uses as much as digits as its factorization.

138751077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46250362.

The product of its (nonzero) digits is 41160, while the sum is 39.

The square root of 138751077 is about 11779.2647054050. The cubic root of 138751077 is about 517.7007422096.

The spelling of 138751077 in words is "one hundred thirty-eight million, seven hundred fifty-one thousand, seventy-seven".