1068454840 has 32 divisors (see below), whose sum is σ = 2411635680. Its totient is φ = 426028672.

The previous prime is 1068454823. The next prime is 1068454847. The reversal of 1068454840 is 484548601.

It is a super-2 number, since 2×1068454840² = 2283191490238851200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1068454793 and 1068454802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1068454847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29452 + ... + 54811.

It is an arithmetic number, because the mean of its divisors is an integer number (75363615).

Almost surely, 2^1068454840 is an apocalyptic number.

1068454840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1068454840 is an abundant number, since it is smaller than the sum of its proper divisors (1343180840).

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

1068454840 is a wasteful number, since it uses less digits than its factorization.

1068454840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84591 (or 84587 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 1068454840 is about 32687.2274749634. The cubic root of 1068454840 is about 1022.3165469741.

The spelling of 1068454840 in words is "one billion, sixty-eight million, four hundred fifty-four thousand, eight hundred forty".