748506181 has 4 divisors (see below), whose sum is σ = 781049952. Its totient is φ = 715962412.

The previous prime is 748506179. The next prime is 748506193. The reversal of 748506181 is 181605847.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 748506181 - 2¹ = 748506179 is a prime.

It is a super-2 number, since 2×748506181² = 1120523005990409522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748506131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16271851 + ... + 16271896.

It is an arithmetic number, because the mean of its divisors is an integer number (195262488).

Almost surely, 2^748506181 is an apocalyptic number.

It is an amenable number.

748506181 is a deficient number, since it is larger than the sum of its proper divisors (32543771).

748506181 is a wasteful number, since it uses less digits than its factorization.

748506181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32543770.

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 748506181 is about 27358.8410024986. The cubic root of 748506181 is about 907.9566845406.

The spelling of 748506181 in words is "seven hundred forty-eight million, five hundred six thousand, one hundred eighty-one".