918265381 has 4 divisors (see below), whose sum is σ = 1001744064. Its totient is φ = 834786700.

The previous prime is 918265357. The next prime is 918265393. The reversal of 918265381 is 183562819.

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 not a de Polignac number, because 918265381 - 2²⁵ = 884710949 is a prime.

It is a super-2 number, since 2×918265381² = 1686422619886150322, 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 (918265781) 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, 41739325 + ... + 41739346.

It is an arithmetic number, because the mean of its divisors is an integer number (250436016).

Almost surely, 2^918265381 is an apocalyptic number.

It is an amenable number.

918265381 is a deficient number, since it is larger than the sum of its proper divisors (83478683).

918265381 is a wasteful number, since it uses less digits than its factorization.

918265381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83478682.

The product of its digits is 103680, while the sum is 43.

The square root of 918265381 is about 30302.8939377083. The cubic root of 918265381 is about 971.9771840202.

The spelling of 918265381 in words is "nine hundred eighteen million, two hundred sixty-five thousand, three hundred eighty-one".