891242653 has 16 divisors (see below), whose sum is σ = 1052789760. Its totient is φ = 738316800.

The previous prime is 891242641. The next prime is 891242657. The reversal of 891242653 is 356242198.

It is a cyclic number.

It is not a de Polignac number, because 891242653 - 2⁵ = 891242621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891242657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199383 + ... + 203803.

It is an arithmetic number, because the mean of its divisors is an integer number (65799360).

Almost surely, 2^891242653 is an apocalyptic number.

It is an amenable number.

891242653 is a deficient number, since it is larger than the sum of its proper divisors (161547107).

891242653 is a wasteful number, since it uses less digits than its factorization.

891242653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5388.

The product of its digits is 103680, while the sum is 40.

The square root of 891242653 is about 29853.6874271839. The cubic root of 891242653 is about 962.3476443616.

The spelling of 891242653 in words is "eight hundred ninety-one million, two hundred forty-two thousand, six hundred fifty-three".