1054557918 has 24 divisors (see below), whose sum is σ = 2289786408. Its totient is φ = 350763792.

The previous prime is 1054557913. The next prime is 1054557953. The reversal of 1054557918 is 8197554501.

1054557918 is a `hidden beast` number, since 1 + 0 + 5 + 4 + 557 + 91 + 8 = 666.

It is a super-2 number, since 2×1054557918² = 2224184804832989448, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1054557913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54321 + ... + 71132.

It is an arithmetic number, because the mean of its divisors is an integer number (95407767).

Almost surely, 2^1054557918 is an apocalyptic number.

1054557918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1054557918 is an abundant number, since it is smaller than the sum of its proper divisors (1235228490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1054557918 is a wasteful number, since it uses less digits than its factorization.

1054557918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125928 (or 125925 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 45.

The square root of 1054557918 is about 32473.9575352312. The cubic root of 1054557918 is about 1017.8649168519.

The spelling of 1054557918 in words is "one billion, fifty-four million, five hundred fifty-seven thousand, nine hundred eighteen".