165748740 has 24 divisors (see below), whose sum is σ = 464096640. Its totient is φ = 44199648.

The previous prime is 165748727. The next prime is 165748747. The reversal of 165748740 is 47847561.

It is a junction number, because it is equal to n+sod(n) for n = 165748692 and 165748701.

It is not an unprimeable number, because it can be changed into a prime (165748747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1381180 + ... + 1381299.

It is an arithmetic number, because the mean of its divisors is an integer number (19337360).

Almost surely, 2^165748740 is an apocalyptic number.

165748740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165748740 is an abundant number, since it is smaller than the sum of its proper divisors (298347900).

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

165748740 is a wasteful number, since it uses less digits than its factorization.

165748740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762491 (or 2762489 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 165748740 is about 12874.3442551456. The cubic root of 165748740 is about 549.3090386494.

The spelling of 165748740 in words is "one hundred sixty-five million, seven hundred forty-eight thousand, seven hundred forty".