1146289840 has 40 divisors (see below), whose sum is σ = 2672739648. Its totient is φ = 457205760.

The previous prime is 1146289831. The next prime is 1146289853. The reversal of 1146289840 is 489826411.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7945 + ... + 48535.

Almost surely, 2^1146289840 is an apocalyptic number.

1146289840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1146289840 is an abundant number, since it is smaller than the sum of its proper divisors (1526449808).

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

1146289840 is a wasteful number, since it uses less digits than its factorization.

1146289840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40957 (or 40951 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 1146289840 is about 33856.9023981817. The cubic root of 1146289840 is about 1046.5616448824.

The spelling of 1146289840 in words is "one billion, one hundred forty-six million, two hundred eighty-nine thousand, eight hundred forty".