3697491249 has 9 divisors (see below), whose sum is σ = 5341084203. Its totient is φ = 2464872552.

The previous prime is 3697491199. The next prime is 3697491253. The reversal of 3697491249 is 9421947963.

The square root of 3697491249 is 60807.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2857650849 + 839840400 = 53457^2 + 28980^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 3697491249 - 2⁹ = 3697490737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3697491195 and 3697491204.

It is not an unprimeable number, because it can be changed into a prime (3697496249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 172287 + ... + 192555.

Almost surely, 2^3697491249 is an apocalyptic number.

3697491249 is the 60807-th square number.

3697491249 is the 30404-th centered octagonal number.

It is an amenable number.

3697491249 is a deficient number, since it is larger than the sum of its proper divisors (1643592954).

3697491249 is an frugal number, since it uses more digits than its factorization.

3697491249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40544 (or 20272 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The cubic root of 3697491249 is about 1546.3307239296.

The spelling of 3697491249 in words is "three billion, six hundred ninety-seven million, four hundred ninety-one thousand, two hundred forty-nine".