921261368 has 8 divisors (see below), whose sum is σ = 1727365080. Its totient is φ = 460630680.

The previous prime is 921261337. The next prime is 921261373. The reversal of 921261368 is 863162129.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

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, 57578828 + ... + 57578843.

It is an arithmetic number, because the mean of its divisors is an integer number (215920635).

Almost surely, 2^921261368 is an apocalyptic number.

It is an amenable number.

921261368 is a deficient number, since it is larger than the sum of its proper divisors (806103712).

921261368 is a wasteful number, since it uses less digits than its factorization.

921261368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115157677 (or 115157673 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 921261368 is about 30352.2876897278. The cubic root of 921261368 is about 973.0331132420.

The spelling of 921261368 in words is "nine hundred twenty-one million, two hundred sixty-one thousand, three hundred sixty-eight".