1054945890 has 32 divisors (see below), whose sum is σ = 2813189760. Its totient is φ = 281318832.

The previous prime is 1054945889. The next prime is 1054945891. The reversal of 1054945890 is 985494501.

1054945890 is a `hidden beast` number, since 10 + 54 + 9 + 4 + 589 + 0 = 666.

1054945890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1054945889) and next prime (1054945891).

It is a super-2 number, since 2×1054945890² = 2225821661655784200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1054945891) 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, 1953334 + ... + 1953873.

It is an arithmetic number, because the mean of its divisors is an integer number (87912180).

Almost surely, 2^1054945890 is an apocalyptic number.

1054945890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1054945890 is an abundant number, since it is smaller than the sum of its proper divisors (1758243870).

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

1054945890 is a wasteful number, since it uses less digits than its factorization.

1054945890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907223 (or 3907217 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 1054945890 is about 32479.9305725859. The cubic root of 1054945890 is about 1017.9897257607.

The spelling of 1054945890 in words is "one billion, fifty-four million, nine hundred forty-five thousand, eight hundred ninety".