1922423740 has 24 divisors (see below), whose sum is σ = 4038112512. Its totient is φ = 768774720.

The previous prime is 1922423731. The next prime is 1922423749. The reversal of 1922423740 is 473242291.

It is an interprime number because it is at equal distance from previous prime (1922423731) and next prime (1922423749).

It is a super-2 number, since 2×1922423740² = 7391426072231175200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1922423696 and 1922423705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1922423749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89445 + ... + 108835.

It is an arithmetic number, because the mean of its divisors is an integer number (168254688).

Almost surely, 2^1922423740 is an apocalyptic number.

1922423740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1922423740 is an abundant number, since it is smaller than the sum of its proper divisors (2115688772).

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

1922423740 is a wasteful number, since it uses less digits than its factorization.

1922423740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24357 (or 24355 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 1922423740 is about 43845.4528999302. The cubic root of 1922423740 is about 1243.4157771681.

The spelling of 1922423740 in words is "one billion, nine hundred twenty-two million, four hundred twenty-three thousand, seven hundred forty".