1970139984 has 80 divisors (see below), whose sum is σ = 5233593600. Its totient is φ = 638318080.

The previous prime is 1970139973. The next prime is 1970140061. The reversal of 1970139984 is 4899310791.

It is a happy number.

It is a congruent number.

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, 333214 + ... + 339074.

It is an arithmetic number, because the mean of its divisors is an integer number (65419920).

Almost surely, 2^1970139984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1970139984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2616796800).

1970139984 is an abundant number, since it is smaller than the sum of its proper divisors (3263453616).

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

1970139984 is a wasteful number, since it uses less digits than its factorization.

1970139984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6068 (or 6062 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 1970139984 is about 44386.2589547711. The cubic root of 1970139984 is about 1253.6193732483.

It can be divided in two parts, 19701 and 39984, that added together give a triangular number (59685 = T₃₄₅).

The spelling of 1970139984 in words is "one billion, nine hundred seventy million, one hundred thirty-nine thousand, nine hundred eighty-four".