3649389573 has 4 divisors (see below), whose sum is σ = 4865852768. Its totient is φ = 2432926380.

The previous prime is 3649389547. The next prime is 3649389619. The reversal of 3649389573 is 3759839463.

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 3649389573 - 2⁹ = 3649389061 is a prime.

It is a super-2 number, since 2×3649389573² = 26636088511042244658, 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 (3649389173) 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, 608231593 + ... + 608231598.

It is an arithmetic number, because the mean of its divisors is an integer number (1216463192).

Almost surely, 2^3649389573 is an apocalyptic number.

It is an amenable number.

3649389573 is a deficient number, since it is larger than the sum of its proper divisors (1216463195).

3649389573 is a wasteful number, since it uses less digits than its factorization.

3649389573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216463194.

The product of its digits is 14696640, while the sum is 57.

The square root of 3649389573 is about 60410.1777269360. The cubic root of 3649389573 is about 1539.5958872473.

The spelling of 3649389573 in words is "three billion, six hundred forty-nine million, three hundred eighty-nine thousand, five hundred seventy-three".