1164551040 has 256 divisors, whose sum is σ = 4342752000. Its totient is φ = 294119424.

The previous prime is 1164551029. The next prime is 1164551107. The reversal of 1164551040 is 401554611.

1164551040 is a `hidden beast` number, since 1 + 1 + 645 + 5 + 10 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1164550995 and 1164551013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 326547 + ... + 330093.

It is an arithmetic number, because the mean of its divisors is an integer number (16963875).

Almost surely, 2^1164551040 is an apocalyptic number.

1164551040 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 1164551040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2171376000).

1164551040 is an abundant number, since it is smaller than the sum of its proper divisors (3178200960).

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

1164551040 is a wasteful number, since it uses less digits than its factorization.

1164551040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594 (or 3576 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1164551040 is about 34125.5188971538. The cubic root of 1164551040 is about 1052.0898784453.

The spelling of 1164551040 in words is "one billion, one hundred sixty-four million, five hundred fifty-one thousand, forty".