748872381 has 4 divisors (see below), whose sum is σ = 998496512. Its totient is φ = 499248252.

The previous prime is 748872379. The next prime is 748872409. The reversal of 748872381 is 183278847.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 183278847 = 3 ⋅61092949.

It is not a de Polignac number, because 748872381 - 2¹ = 748872379 is a prime.

It is a super-2 number, since 2×748872381² = 1121619686049218322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 748872381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748872181) 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, 124812061 + ... + 124812066.

It is an arithmetic number, because the mean of its divisors is an integer number (249624128).

Almost surely, 2^748872381 is an apocalyptic number.

It is an amenable number.

748872381 is a deficient number, since it is larger than the sum of its proper divisors (249624131).

748872381 is a wasteful number, since it uses less digits than its factorization.

748872381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249624130.

The product of its digits is 602112, while the sum is 48.

The square root of 748872381 is about 27365.5327190976. The cubic root of 748872381 is about 908.1047303140.

The spelling of 748872381 in words is "seven hundred forty-eight million, eight hundred seventy-two thousand, three hundred eighty-one".