1922801980 has 48 divisors (see below), whose sum is σ = 4412620800. Its totient is φ = 697985600.

The previous prime is 1922801941. The next prime is 1922801981. The reversal of 1922801980 is 891082291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1922801981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124485 + ... + 139075.

It is an arithmetic number, because the mean of its divisors is an integer number (91929600).

Almost surely, 2^1922801980 is an apocalyptic number.

1922801980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1922801980 is an abundant number, since it is smaller than the sum of its proper divisors (2489818820).

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

1922801980 is a wasteful number, since it uses less digits than its factorization.

1922801980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15210 (or 15208 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 1922801980 is about 43849.7660199003. The cubic root of 1922801980 is about 1243.4973198465.

The spelling of 1922801980 in words is "one billion, nine hundred twenty-two million, eight hundred one thousand, nine hundred eighty".