73974847938 has 16 divisors (see below), whose sum is σ = 150457318560. Its totient is φ = 24240345536.

The previous prime is 73974847909. The next prime is 73974847967. The reversal of 73974847938 is 83974847937.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (73974847909) and next prime (73974847967).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104483895 + ... + 104484602.

It is an arithmetic number, because the mean of its divisors is an integer number (9403582410).

Almost surely, 2^73974847938 is an apocalyptic number.

73974847938 is an abundant number, since it is smaller than the sum of its proper divisors (76482470622).

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

73974847938 is a wasteful number, since it uses less digits than its factorization.

73974847938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208968561.

The product of its digits is 256048128, while the sum is 69.

Subtracting 73974847938 from its reverse (83974847937), we obtain a palindrome (9999999999).

The spelling of 73974847938 in words is "seventy-three billion, nine hundred seventy-four million, eight hundred forty-seven thousand, nine hundred thirty-eight".