748181893 has 4 divisors (see below), whose sum is σ = 749091808. Its totient is φ = 747271980.

The previous prime is 748181857. The next prime is 748181909. The reversal of 748181893 is 398181847.

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 a de Polignac number, because none of the positive numbers 2^k-748181893 is a prime.

It is a super-2 number, since 2×748181893² = 1119552290026126898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748181843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453723 + ... + 455368.

It is an arithmetic number, because the mean of its divisors is an integer number (187272952).

Almost surely, 2^748181893 is an apocalyptic number.

It is an amenable number.

748181893 is a deficient number, since it is larger than the sum of its proper divisors (909915).

748181893 is an equidigital number, since it uses as much as digits as its factorization.

748181893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909914.

The product of its digits is 387072, while the sum is 49.

The square root of 748181893 is about 27352.9137935979. The cubic root of 748181893 is about 907.8255424531.

The spelling of 748181893 in words is "seven hundred forty-eight million, one hundred eighty-one thousand, eight hundred ninety-three".