138937051 has 4 divisors (see below), whose sum is σ = 151567704. Its totient is φ = 126306400.

The previous prime is 138937049. The next prime is 138937061. The reversal of 138937051 is 150739831.

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: 150739831 = 11 ⋅13703621.

It is not a de Polignac number, because 138937051 - 2¹ = 138937049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138937051.

It is not an unprimeable number, because it can be changed into a prime (138937021) 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, 6315310 + ... + 6315331.

It is an arithmetic number, because the mean of its divisors is an integer number (37891926).

Almost surely, 2^138937051 is an apocalyptic number.

138937051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

138937051 is the 6301-st centered heptagonal number.

138937051 is a deficient number, since it is larger than the sum of its proper divisors (12630653).

138937051 is a wasteful number, since it uses less digits than its factorization.

138937051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12630652.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 138937051 is about 11787.1561879870. The cubic root of 138937051 is about 517.9319377587.

The spelling of 138937051 in words is "one hundred thirty-eight million, nine hundred thirty-seven thousand, fifty-one".