3649297511 has 4 divisors (see below), whose sum is σ = 3654835800. Its totient is φ = 3643759224.

The previous prime is 3649297499. The next prime is 3649297517. The reversal of 3649297511 is 1157929463.

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 3649297511 - 2¹⁰ = 3649296487 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 (3649297517) 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, 2768156 + ... + 2769473.

It is an arithmetic number, because the mean of its divisors is an integer number (913708950).

Almost surely, 2^3649297511 is an apocalyptic number.

3649297511 is a deficient number, since it is larger than the sum of its proper divisors (5538289).

3649297511 is an equidigital number, since it uses as much as digits as its factorization.

3649297511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5538288.

The product of its digits is 408240, while the sum is 47.

The square root of 3649297511 is about 60409.4157478782. The cubic root of 3649297511 is about 1539.5829408384.

The spelling of 3649297511 in words is "three billion, six hundred forty-nine million, two hundred ninety-seven thousand, five hundred eleven".