1972881570 has 64 divisors (see below), whose sum is σ = 5215601664. Its totient is φ = 473622720.

The previous prime is 1972881539. The next prime is 1972881607. The reversal of 1972881570 is 751882791.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4969 + ... + 63011.

It is an arithmetic number, because the mean of its divisors is an integer number (81493776).

Almost surely, 2^1972881570 is an apocalyptic number.

1972881570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1972881570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2607800832).

1972881570 is an abundant number, since it is smaller than the sum of its proper divisors (3242720094).

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

1972881570 is a wasteful number, since it uses less digits than its factorization.

1972881570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58167.

The product of its (nonzero) digits is 282240, while the sum is 48.

The square root of 1972881570 is about 44417.1314922520. The cubic root of 1972881570 is about 1254.2006030682.

The spelling of 1972881570 in words is "one billion, nine hundred seventy-two million, eight hundred eighty-one thousand, five hundred seventy".