3745634491 has 4 divisors (see below), whose sum is σ = 3746395984. Its totient is φ = 3744873000.

The previous prime is 3745634467. The next prime is 3745634513. The reversal of 3745634491 is 1944365473.

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 3745634491 - 2¹⁹ = 3745110203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3745637491) 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, 373320 + ... + 383221.

It is an arithmetic number, because the mean of its divisors is an integer number (936598996).

Almost surely, 2^3745634491 is an apocalyptic number.

3745634491 is a deficient number, since it is larger than the sum of its proper divisors (761493).

3745634491 is an equidigital number, since it uses as much as digits as its factorization.

3745634491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761492.

The product of its digits is 1088640, while the sum is 46.

The square root of 3745634491 is about 61201.5889581308. The cubic root of 3745634491 is about 1553.0131454847.

The spelling of 3745634491 in words is "three billion, seven hundred forty-five million, six hundred thirty-four thousand, four hundred ninety-one".