1922297994 has 40 divisors (see below), whose sum is σ = 4361924160. Its totient is φ = 632650824.

The previous prime is 1922297989. The next prime is 1922298041. The reversal of 1922297994 is 4997922291.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1922297994.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 62304 + ... + 87899.

It is an arithmetic number, because the mean of its divisors is an integer number (109048104).

Almost surely, 2^1922297994 is an apocalyptic number.

1922297994 is an abundant number, since it is smaller than the sum of its proper divisors (2439626166).

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

1922297994 is a wasteful number, since it uses less digits than its factorization.

1922297994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150296 (or 150287 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 1922297994 is about 43844.0189079423. The cubic root of 1922297994 is about 1243.3886659116.

It can be divided in two parts, 1922297 and 994, that added together give a palindrome (1923291).

The spelling of 1922297994 in words is "one billion, nine hundred twenty-two million, two hundred ninety-seven thousand, nine hundred ninety-four".