918867764 has 6 divisors (see below), whose sum is σ = 1608018594. Its totient is φ = 459433880.

The previous prime is 918867757. The next prime is 918867787. The reversal of 918867764 is 467768819.

It can be written as a sum of positive squares in only one way, i.e., 689587600 + 229280164 = 26260^2 + 15142^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114858467 + ... + 114858474.

It is an arithmetic number, because the mean of its divisors is an integer number (268003099).

Almost surely, 2^918867764 is an apocalyptic number.

It is an amenable number.

918867764 is a deficient number, since it is larger than the sum of its proper divisors (689150830).

918867764 is a wasteful number, since it uses less digits than its factorization.

918867764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229716945 (or 229716943 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 56.

The square root of 918867764 is about 30312.8316724123. The cubic root of 918867764 is about 972.1896768938.

The spelling of 918867764 in words is "nine hundred eighteen million, eight hundred sixty-seven thousand, seven hundred sixty-four".