1970983820 has 24 divisors (see below), whose sum is σ = 4457456304. Its totient is φ = 727747776.

The previous prime is 1970983801. The next prime is 1970983897. The reversal of 1970983820 is 283890791.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3790094 + ... + 3790613.

It is an arithmetic number, because the mean of its divisors is an integer number (185727346).

Almost surely, 2^1970983820 is an apocalyptic number.

1970983820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1970983820 is an abundant number, since it is smaller than the sum of its proper divisors (2486472484).

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

1970983820 is a wasteful number, since it uses less digits than its factorization.

1970983820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7580729 (or 7580727 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 1970983820 is about 44395.7635366259. The cubic root of 1970983820 is about 1253.7983280725.

The spelling of 1970983820 in words is "one billion, nine hundred seventy million, nine hundred eighty-three thousand, eight hundred twenty".