1974822820 has 48 divisors (see below), whose sum is σ = 4184405568. Its totient is φ = 782864000.

The previous prime is 1974822809. The next prime is 1974822907. The reversal of 1974822820 is 282284791.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1138674 + ... + 1140406.

It is an arithmetic number, because the mean of its divisors is an integer number (87175116).

Almost surely, 2^1974822820 is an apocalyptic number.

1974822820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1974822820 is an abundant number, since it is smaller than the sum of its proper divisors (2209582748).

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

1974822820 is a wasteful number, since it uses less digits than its factorization.

1974822820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220 (or 2218 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 1974822820 is about 44438.9786111247. The cubic root of 1974822820 is about 1254.6118321444.

The spelling of 1974822820 in words is "one billion, nine hundred seventy-four million, eight hundred twenty-two thousand, eight hundred twenty".