1122390861 has 8 divisors (see below), whose sum is σ = 1499931840. Its totient is φ = 746555232.

The previous prime is 1122390827. The next prime is 1122390887. The reversal of 1122390861 is 1680932211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1122390861 - 2⁷ = 1122390733 is a prime.

It is a super-2 number, since 2×1122390861² = 2519522489712642642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122390811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424800 + ... + 427433.

It is an arithmetic number, because the mean of its divisors is an integer number (187491480).

Almost surely, 2^1122390861 is an apocalyptic number.

It is an amenable number.

1122390861 is a deficient number, since it is larger than the sum of its proper divisors (377540979).

1122390861 is an equidigital number, since it uses as much as digits as its factorization.

1122390861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852675.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1122390861 is about 33502.1023370176. The cubic root of 1122390861 is about 1039.2372553908.

The spelling of 1122390861 in words is "one billion, one hundred twenty-two million, three hundred ninety thousand, eight hundred sixty-one".