3728828669 has 4 divisors (see below), whose sum is σ = 3736613760. Its totient is φ = 3721043580.

The previous prime is 3728828651. The next prime is 3728828683. The reversal of 3728828669 is 9668288273.

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 a cyclic number.

It is not a de Polignac number, because 3728828669 - 2¹² = 3728824573 is a prime.

It is a super-2 number, since 2×3728828669² = 27808326485512623122, 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 (3728828629) 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, 3891827 + ... + 3892784.

It is an arithmetic number, because the mean of its divisors is an integer number (934153440).

Almost surely, 2^3728828669 is an apocalyptic number.

It is an amenable number.

3728828669 is a deficient number, since it is larger than the sum of its proper divisors (7785091).

3728828669 is an equidigital number, since it uses as much as digits as its factorization.

3728828669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7785090.

The product of its digits is 13934592, while the sum is 59.

The square root of 3728828669 is about 61064.1357017358. The cubic root of 3728828669 is about 1550.6869891210.

The spelling of 3728828669 in words is "three billion, seven hundred twenty-eight million, eight hundred twenty-eight thousand, six hundred sixty-nine".