3748446991 has 4 divisors (see below), whose sum is σ = 3748695552. Its totient is φ = 3748198432.

The previous prime is 3748446973. The next prime is 3748447019. The reversal of 3748446991 is 1996448473.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3748446991 - 2¹⁷ = 3748315919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3748446391) 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 3 ways as a sum of consecutive naturals, for example, 100090 + ... + 132343.

It is an arithmetic number, because the mean of its divisors is an integer number (937173888).

Almost surely, 2^3748446991 is an apocalyptic number.

3748446991 is a deficient number, since it is larger than the sum of its proper divisors (248561).

3748446991 is a wasteful number, since it uses less digits than its factorization.

3748446991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248560.

The product of its digits is 5225472, while the sum is 55.

The square root of 3748446991 is about 61224.5619910833. The cubic root of 3748446991 is about 1553.4017540282.

The spelling of 3748446991 in words is "three billion, seven hundred forty-eight million, four hundred forty-six thousand, nine hundred ninety-one".