1964370820 has 12 divisors (see below), whose sum is σ = 4125178764. Its totient is φ = 785748320.

The previous prime is 1964370761. The next prime is 1964370833. The reversal of 1964370820 is 280734691.

It can be written as a sum of positive squares in 2 ways, for example, as 575616064 + 1388754756 = 23992^2 + 37266^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49109251 + ... + 49109290.

It is an arithmetic number, because the mean of its divisors is an integer number (343764897).

Almost surely, 2^1964370820 is an apocalyptic number.

1964370820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1964370820 is an abundant number, since it is smaller than the sum of its proper divisors (2160807944).

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

1964370820 is a wasteful number, since it uses less digits than its factorization.

1964370820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98218550 (or 98218548 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1964370820 is about 44321.2231329416. The cubic root of 1964370820 is about 1252.3945183632.

The spelling of 1964370820 in words is "one billion, nine hundred sixty-four million, three hundred seventy thousand, eight hundred twenty".