138797835 has 32 divisors (see below), whose sum is σ = 243053568. Its totient is φ = 67077120.

The previous prime is 138797807. The next prime is 138797837. The reversal of 138797835 is 538797831.

It is not a de Polignac number, because 138797835 - 2¹⁰ = 138796811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138797837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57054 + ... + 59436.

It is an arithmetic number, because the mean of its divisors is an integer number (7595424).

Almost surely, 2^138797835 is an apocalyptic number.

138797835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138797835 is a deficient number, since it is larger than the sum of its proper divisors (104255733).

138797835 is a wasteful number, since it uses less digits than its factorization.

138797835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755.

The product of its digits is 1270080, while the sum is 51.

The square root of 138797835 is about 11781.2492970822. The cubic root of 138797835 is about 517.7588893443.

The spelling of 138797835 in words is "one hundred thirty-eight million, seven hundred ninety-seven thousand, eight hundred thirty-five".