2620972149 has 4 divisors (see below), whose sum is σ = 3494629536. Its totient is φ = 1747314764.

The previous prime is 2620972147. The next prime is 2620972183. The reversal of 2620972149 is 9412790262.

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 2620972149 - 2¹ = 2620972147 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2620972149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620972141) 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 3 ways as a sum of consecutive naturals, for example, 436828689 + ... + 436828694.

It is an arithmetic number, because the mean of its divisors is an integer number (873657384).

Almost surely, 2^2620972149 is an apocalyptic number.

It is an amenable number.

2620972149 is a deficient number, since it is larger than the sum of its proper divisors (873657387).

2620972149 is an equidigital number, since it uses as much as digits as its factorization.

2620972149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873657386.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 2620972149 is about 51195.4309387078. The cubic root of 2620972149 is about 1378.7561691990.

The spelling of 2620972149 in words is "two billion, six hundred twenty million, nine hundred seventy-two thousand, one hundred forty-nine".