1980726174 has 96 divisors (see below), whose sum is σ = 5174158080. Its totient is φ = 534957696.

The previous prime is 1980726169. The next prime is 1980726191. The reversal of 1980726174 is 4716270891.

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 47 ways as a sum of consecutive naturals, for example, 2113434 + ... + 2114370.

It is an arithmetic number, because the mean of its divisors is an integer number (53897480).

Almost surely, 2^1980726174 is an apocalyptic number.

1980726174 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1980726174, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2587079040).

1980726174 is an abundant number, since it is smaller than the sum of its proper divisors (3193431906).

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

1980726174 is a wasteful number, since it uses less digits than its factorization.

1980726174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854 (or 1851 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 1980726174 is about 44505.3499480680. The cubic root of 1980726174 is about 1255.8607289928.

The spelling of 1980726174 in words is "one billion, nine hundred eighty million, seven hundred twenty-six thousand, one hundred seventy-four".