74951638 has 16 divisors (see below), whose sum is σ = 113734656. Its totient is φ = 37042920.

The previous prime is 74951633. The next prime is 74951659. The reversal of 74951638 is 83615947.

It is a junction number, because it is equal to n+sod(n) for n = 74951594 and 74951603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74951633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72183 + ... + 73213.

It is an arithmetic number, because the mean of its divisors is an integer number (7108416).

Almost surely, 2^74951638 is an apocalyptic number.

74951638 is a deficient number, since it is larger than the sum of its proper divisors (38783018).

74951638 is a wasteful number, since it uses less digits than its factorization.

74951638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419.

The product of its digits is 181440, while the sum is 43.

The square root of 74951638 is about 8657.4614062091. The cubic root of 74951638 is about 421.6256685148.

The spelling of 74951638 in words is "seventy-four million, nine hundred fifty-one thousand, six hundred thirty-eight".