1146687840 has 384 divisors, whose sum is σ = 4240252800. Its totient is φ = 292626432.

The previous prime is 1146687827. The next prime is 1146687847. The reversal of 1146687840 is 487866411.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1146687847) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10147624 + ... + 10147736.

It is an arithmetic number, because the mean of its divisors is an integer number (11042325).

Almost surely, 2^1146687840 is an apocalyptic number.

1146687840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1146687840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2120126400).

1146687840 is an abundant number, since it is smaller than the sum of its proper divisors (3093564960).

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

1146687840 is an equidigital number, since it uses as much as digits as its factorization.

1146687840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 1146687840 is about 33862.7795669523. The cubic root of 1146687840 is about 1046.6827554200.

The spelling of 1146687840 in words is "one billion, one hundred forty-six million, six hundred eighty-seven thousand, eight hundred forty".