1972459860 has 96 divisors (see below), whose sum is σ = 6361743360. Its totient is φ = 447285888.

The previous prime is 1972459831. The next prime is 1972459873. The reversal of 1972459860 is 689542791.

It is a super-2 number, since 2×1972459860² = 7781195798622439200, which contains 22 as substring.

It is a congruent 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, 34851 + ... + 71829.

It is an arithmetic number, because the mean of its divisors is an integer number (66268160).

Almost surely, 2^1972459860 is an apocalyptic number.

1972459860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1972459860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3180871680).

1972459860 is an abundant number, since it is smaller than the sum of its proper divisors (4389283500).

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

1972459860 is a wasteful number, since it uses less digits than its factorization.

1972459860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37125 (or 37123 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 51.

The square root of 1972459860 is about 44412.3840837215. The cubic root of 1972459860 is about 1254.1112335162. Note that the first 3 decimals are identical.

The spelling of 1972459860 in words is "one billion, nine hundred seventy-two million, four hundred fifty-nine thousand, eight hundred sixty".