1165630620 has 384 divisors, whose sum is σ = 4386816000. Its totient is φ = 228614400.

The previous prime is 1165630607. The next prime is 1165630621. The reversal of 1165630620 is 260365611.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165630621) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4301085 + ... + 4301355.

It is an arithmetic number, because the mean of its divisors is an integer number (11424000).

Almost surely, 2^1165630620 is an apocalyptic number.

1165630620 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 1165630620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2193408000).

1165630620 is an abundant number, since it is smaller than the sum of its proper divisors (3221185380).

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

1165630620 is a wasteful number, since it uses less digits than its factorization.

1165630620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1165630620 is about 34141.3330143977. Note that the first 3 decimals coincide. The cubic root of 1165630620 is about 1052.4148862100.

The spelling of 1165630620 in words is "one billion, one hundred sixty-five million, six hundred thirty thousand, six hundred twenty".