2137948649 has 8 divisors (see below), whose sum is σ = 2211361152. Its totient is φ = 2065548960.

The previous prime is 2137948633. The next prime is 2137948661. The reversal of 2137948649 is 9468497312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2137948649 - 2⁴ = 2137948633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2137948649.

It is not an unprimeable number, because it can be changed into a prime (2137948619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248909 + ... + 257354.

It is an arithmetic number, because the mean of its divisors is an integer number (276420144).

Almost surely, 2^2137948649 is an apocalyptic number.

It is an amenable number.

2137948649 is a deficient number, since it is larger than the sum of its proper divisors (73412503).

2137948649 is a wasteful number, since it uses less digits than its factorization.

2137948649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506407.

The product of its digits is 2612736, while the sum is 53.

The square root of 2137948649 is about 46237.9567995819. The cubic root of 2137948649 is about 1288.2468521197.

The spelling of 2137948649 in words is "two billion, one hundred thirty-seven million, nine hundred forty-eight thousand, six hundred forty-nine".