1992554380 has 24 divisors (see below), whose sum is σ = 4210042032. Its totient is φ = 792130752.

The previous prime is 1992554371. The next prime is 1992554387. The reversal of 1992554380 is 834552991.

It is a self number, because there is not a number n which added to its sum of digits gives 1992554380.

It is not an unprimeable number, because it can be changed into a prime (1992554387) 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, 302347 + ... + 308866.

It is an arithmetic number, because the mean of its divisors is an integer number (175418418).

Almost surely, 2^1992554380 is an apocalyptic number.

1992554380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1992554380 is an abundant number, since it is smaller than the sum of its proper divisors (2217487652).

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

1992554380 is a wasteful number, since it uses less digits than its factorization.

1992554380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611385 (or 611383 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 1992554380 is about 44638.0373672499. The cubic root of 1992554380 is about 1258.3556234618.

It can be divided in two parts, 19925 and 54380, that added together give a triangular number (74305 = T₃₈₅).

The spelling of 1992554380 in words is "one billion, nine hundred ninety-two million, five hundred fifty-four thousand, three hundred eighty".