1992415420 has 48 divisors (see below), whose sum is σ = 4352493600. Its totient is φ = 765192960.

The previous prime is 1992415409. The next prime is 1992415421. The reversal of 1992415420 is 245142991.

It is a self number, because there is not a number n which added to its sum of digits gives 1992415420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992415421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95491 + ... + 114469.

It is an arithmetic number, because the mean of its divisors is an integer number (90676950).

Almost surely, 2^1992415420 is an apocalyptic number.

1992415420 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 1992415420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2176246800).

1992415420 is an abundant number, since it is smaller than the sum of its proper divisors (2360078180).

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

1992415420 is a wasteful number, since it uses less digits than its factorization.

1992415420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19198 (or 19196 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1992415420 is about 44636.4808200647. The cubic root of 1992415420 is about 1258.3263703643.

It can be divided in two parts, 19924 and 15420, that added together give a square (35344 = 188²).

The spelling of 1992415420 in words is "one billion, nine hundred ninety-two million, four hundred fifteen thousand, four hundred twenty".