918661461 has 4 divisors (see below), whose sum is σ = 1224881952. Its totient is φ = 612440972.

The previous prime is 918661459. The next prime is 918661463. The reversal of 918661461 is 164166819.

918661461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is an interprime number because it is at equal distance from previous prime (918661459) and next prime (918661463).

It is a cyclic number.

It is not a de Polignac number, because 918661461 - 2¹ = 918661459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918661463) 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, 153110241 + ... + 153110246.

It is an arithmetic number, because the mean of its divisors is an integer number (306220488).

Almost surely, 2^918661461 is an apocalyptic number.

It is an amenable number.

918661461 is a deficient number, since it is larger than the sum of its proper divisors (306220491).

918661461 is a wasteful number, since it uses less digits than its factorization.

918661461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306220490.

The product of its digits is 62208, while the sum is 42.

The square root of 918661461 is about 30309.4285825385. The cubic root of 918661461 is about 972.1169131923.

The spelling of 918661461 in words is "nine hundred eighteen million, six hundred sixty-one thousand, four hundred sixty-one".