3781675749 has 4 divisors (see below), whose sum is σ = 5042234336. Its totient is φ = 2521117164.

The previous prime is 3781675717. The next prime is 3781675753. The reversal of 3781675749 is 9475761873.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3781675749 - 2⁵ = 3781675717 is a prime.

It is a super-2 number, since 2×3781675749² = 28602142941149422002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781675349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 630279289 + ... + 630279294.

It is an arithmetic number, because the mean of its divisors is an integer number (1260558584).

Almost surely, 2^3781675749 is an apocalyptic number.

It is an amenable number.

3781675749 is a deficient number, since it is larger than the sum of its proper divisors (1260558587).

3781675749 is a wasteful number, since it uses less digits than its factorization.

3781675749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260558586.

The product of its digits is 8890560, while the sum is 57.

The square root of 3781675749 is about 61495.3311154595. The cubic root of 3781675749 is about 1557.9783901134.

The spelling of 3781675749 in words is "three billion, seven hundred eighty-one million, six hundred seventy-five thousand, seven hundred forty-nine".