2149537497 has 4 divisors (see below), whose sum is σ = 2866050000. Its totient is φ = 1433024996.

The previous prime is 2149537471. The next prime is 2149537513. The reversal of 2149537497 is 7947359412.

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 a cyclic number.

It is not a de Polignac number, because 2149537497 - 2¹⁴ = 2149521113 is a prime.

It is a super-3 number, since 3×2149537497³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (2149530497) 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, 358256247 + ... + 358256252.

It is an arithmetic number, because the mean of its divisors is an integer number (716512500).

Almost surely, 2^2149537497 is an apocalyptic number.

It is an amenable number.

2149537497 is a deficient number, since it is larger than the sum of its proper divisors (716512503).

2149537497 is an equidigital number, since it uses as much as digits as its factorization.

2149537497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716512502.

The product of its digits is 1905120, while the sum is 51.

The square root of 2149537497 is about 46363.1049111252. The cubic root of 2149537497 is about 1290.5703259045.

The spelling of 2149537497 in words is "two billion, one hundred forty-nine million, five hundred thirty-seven thousand, four hundred ninety-seven".