138451335 has 32 divisors (see below), whose sum is σ = 242514432. Its totient is φ = 66890880.

The previous prime is 138451321. The next prime is 138451343. The reversal of 138451335 is 533154831.

It is not a de Polignac number, because 138451335 - 2⁴ = 138451319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 138451296 and 138451305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50982 + ... + 53628.

It is an arithmetic number, because the mean of its divisors is an integer number (7578576).

Almost surely, 2^138451335 is an apocalyptic number.

138451335 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138451335 is a deficient number, since it is larger than the sum of its proper divisors (104063097).

138451335 is a wasteful number, since it uses less digits than its factorization.

138451335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983.

The product of its digits is 21600, while the sum is 33.

The square root of 138451335 is about 11766.5345365575. The cubic root of 138451335 is about 517.3276795627.

The spelling of 138451335 in words is "one hundred thirty-eight million, four hundred fifty-one thousand, three hundred thirty-five".