2188980951 has 4 divisors (see below), whose sum is σ = 2918641272. Its totient is φ = 1459320632.

The previous prime is 2188980947. The next prime is 2188980973. The reversal of 2188980951 is 1590898812.

2188980951 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 2188980951 - 2² = 2188980947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2188980894 and 2188980903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188980991) 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, 364830156 + ... + 364830161.

It is an arithmetic number, because the mean of its divisors is an integer number (729660318).

Almost surely, 2^2188980951 is an apocalyptic number.

2188980951 is a deficient number, since it is larger than the sum of its proper divisors (729660321).

2188980951 is an equidigital number, since it uses as much as digits as its factorization.

2188980951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729660320.

The product of its (nonzero) digits is 414720, while the sum is 51.

The square root of 2188980951 is about 46786.5466881239. The cubic root of 2188980951 is about 1298.4164052582.

The spelling of 2188980951 in words is "two billion, one hundred eighty-eight million, nine hundred eighty thousand, nine hundred fifty-one".