1122499620 has 192 divisors, whose sum is σ = 3858382080. Its totient is φ = 272004480.

The previous prime is 1122499619. The next prime is 1122499633. The reversal of 1122499620 is 269942211.

1122499620 is a `hidden beast` number, since 1 + 1 + 2 + 24 + 9 + 9 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 479974 + ... + 482306.

It is an arithmetic number, because the mean of its divisors is an integer number (20095740).

Almost surely, 2^1122499620 is an apocalyptic number.

1122499620 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 1122499620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1929191040).

1122499620 is an abundant number, since it is smaller than the sum of its proper divisors (2735882460).

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

1122499620 is a wasteful number, since it uses less digits than its factorization.

1122499620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374 (or 2354 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1122499620 is about 33503.7254644913. The cubic root of 1122499620 is about 1039.2708214619.

The spelling of 1122499620 in words is "one billion, one hundred twenty-two million, four hundred ninety-nine thousand, six hundred twenty".