180745740 has 144 divisors (see below), whose sum is σ = 643685952. Its totient is φ = 40186368.

The previous prime is 180745711. The next prime is 180745769. The reversal of 180745740 is 47547081.

180745740 is a `hidden beast` number, since 1 + 80 + 7 + 4 + 574 + 0 = 666.

180745740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (180745711) and next prime (180745769).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 180745695 and 180745704.

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, 44682 + ... + 48558.

Almost surely, 2^180745740 is an apocalyptic number.

180745740 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 180745740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321842976).

180745740 is an abundant number, since it is smaller than the sum of its proper divisors (462940212).

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

180745740 is a wasteful number, since it uses less digits than its factorization.

180745740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936 (or 3931 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 180745740 is about 13444.1712277105. The cubic root of 180745740 is about 565.4002854295.

The spelling of 180745740 in words is "one hundred eighty million, seven hundred forty-five thousand, seven hundred forty".