1018830461 has 4 divisors (see below), whose sum is σ = 1111451424. Its totient is φ = 926209500.

The previous prime is 1018830457. The next prime is 1018830499. The reversal of 1018830461 is 1640388101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1640388101 = 11 ⋅149126191.

It is a cyclic number.

It is not a de Polignac number, because 1018830461 - 2² = 1018830457 is a prime.

It is a super-2 number, since 2×1018830461² = 2076031016522945042, 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 (1018830431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46310465 + ... + 46310486.

It is an arithmetic number, because the mean of its divisors is an integer number (277862856).

Almost surely, 2^1018830461 is an apocalyptic number.

1018830461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1018830461 is a deficient number, since it is larger than the sum of its proper divisors (92620963).

1018830461 is an equidigital number, since it uses as much as digits as its factorization.

1018830461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92620962.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 1018830461 is about 31919.1237505042. The cubic root of 1018830461 is about 1006.2378289180.

The spelling of 1018830461 in words is "one billion, eighteen million, eight hundred thirty thousand, four hundred sixty-one".