748025449638 has 64 divisors (see below), whose sum is σ = 1550980569600. Its totient is φ = 240224624640.

The previous prime is 748025449631. The next prime is 748025449649. The reversal of 748025449638 is 836944520847.

It is a super-2 number, since 2×748025449638² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748025449631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268012023 + ... + 268014813.

It is an arithmetic number, because the mean of its divisors is an integer number (24234071400).

Almost surely, 2^748025449638 is an apocalyptic number.

748025449638 is an abundant number, since it is smaller than the sum of its proper divisors (802955119962).

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

748025449638 is a wasteful number, since it uses less digits than its factorization.

748025449638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5597.

The product of its (nonzero) digits is 46448640, while the sum is 60.

The spelling of 748025449638 in words is "seven hundred forty-eight billion, twenty-five million, four hundred forty-nine thousand, six hundred thirty-eight".