1164212920 has 64 divisors (see below), whose sum is σ = 2826825120. Its totient is φ = 428972544.

The previous prime is 1164212909. The next prime is 1164212927. The reversal of 1164212920 is 292124611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164212927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282394 + ... + 286486.

Almost surely, 2^1164212920 is an apocalyptic number.

1164212920 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 1164212920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1413412560).

1164212920 is an abundant number, since it is smaller than the sum of its proper divisors (1662612200).

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

1164212920 is a wasteful number, since it uses less digits than its factorization.

1164212920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4664 (or 4660 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1164212920 is about 34120.5644736426. The cubic root of 1164212920 is about 1051.9880460506.

The spelling of 1164212920 in words is "one billion, one hundred sixty-four million, two hundred twelve thousand, nine hundred twenty".