461021538 has 16 divisors (see below), whose sum is σ = 976281120. Its totient is φ = 144634176.

The previous prime is 461021479. The next prime is 461021579. The reversal of 461021538 is 835120164.

It is a super-4 number, since 4×461021538⁴ (a number of 36 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2259808 + ... + 2260011.

It is an arithmetic number, because the mean of its divisors is an integer number (61017570).

Almost surely, 2^461021538 is an apocalyptic number.

461021538 is an abundant number, since it is smaller than the sum of its proper divisors (515259582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

461021538 is a wasteful number, since it uses less digits than its factorization.

461021538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4519841.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 461021538 is about 21471.4121100593. The cubic root of 461021538 is about 772.5152682857.

The spelling of 461021538 in words is "four hundred sixty-one million, twenty-one thousand, five hundred thirty-eight".