138462851 has 4 divisors (see below), whose sum is σ = 140413104. Its totient is φ = 136512600.

The previous prime is 138462847. The next prime is 138462859. The reversal of 138462851 is 158264831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138462851 - 2² = 138462847 is a prime.

It is a super-2 number, since 2×138462851² = 38343922214096402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138462859) 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, 975020 + ... + 975161.

It is an arithmetic number, because the mean of its divisors is an integer number (35103276).

Almost surely, 2^138462851 is an apocalyptic number.

138462851 is a deficient number, since it is larger than the sum of its proper divisors (1950253).

138462851 is an equidigital number, since it uses as much as digits as its factorization.

138462851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950252.

The product of its digits is 46080, while the sum is 38.

The square root of 138462851 is about 11767.0238803191. The cubic root of 138462851 is about 517.3420224613.

The spelling of 138462851 in words is "one hundred thirty-eight million, four hundred sixty-two thousand, eight hundred fifty-one".