462138381 has 6 divisors (see below), whose sum is σ = 667533230. Its totient is φ = 308092248.

The previous prime is 462138377. The next prime is 462138389. The reversal of 462138381 is 183831264.

It can be written as a sum of positive squares in only one way, i.e., 295496100 + 166642281 = 17190^2 + 12909^2 .

It is not a de Polignac number, because 462138381 - 2² = 462138377 is a prime.

It is a super-2 number, since 2×462138381² = 427143766386602322, 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 (462138389) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25674346 + ... + 25674363.

Almost surely, 2^462138381 is an apocalyptic number.

It is an amenable number.

462138381 is a deficient number, since it is larger than the sum of its proper divisors (205394849).

462138381 is a wasteful number, since it uses less digits than its factorization.

462138381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51348715 (or 51348712 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 462138381 is about 21497.4040525827. The cubic root of 462138381 is about 773.1385815368.

The spelling of 462138381 in words is "four hundred sixty-two million, one hundred thirty-eight thousand, three hundred eighty-one".