1054368891 has 18 divisors (see below), whose sum is σ = 1533380940. Its totient is φ = 698121696.

The previous prime is 1054368817. The next prime is 1054368911. The reversal of 1054368891 is 1988634501.

1054368891 is a `hidden beast` number, since 10 + 543 + 6 + 8 + 8 + 91 = 666.

It is not a de Polignac number, because 1054368891 - 2¹⁸ = 1054106747 is a prime.

It is a super-2 number, since 2×1054368891² = 2223387516617139762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1054368811) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1302895 + ... + 1303703.

It is an arithmetic number, because the mean of its divisors is an integer number (85187830).

Almost surely, 2^1054368891 is an apocalyptic number.

1054368891 is a deficient number, since it is larger than the sum of its proper divisors (479012049).

1054368891 is an frugal number, since it uses more digits than its factorization.

1054368891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803 (or 991 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 1054368891 is about 32471.0469649502. The cubic root of 1054368891 is about 1017.8040965955.

The spelling of 1054368891 in words is "one billion, fifty-four million, three hundred sixty-eight thousand, eight hundred ninety-one".