2191949602 has 8 divisors (see below), whose sum is σ = 3288574800. Its totient is φ = 1095758004.

The previous prime is 2191949593. The next prime is 2191949603. The reversal of 2191949602 is 2069491912.

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

It is not an unprimeable number, because it can be changed into a prime (2191949603) 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, 95452 + ... + 116167.

It is an arithmetic number, because the mean of its divisors is an integer number (411071850).

Almost surely, 2^2191949602 is an apocalyptic number.

2191949602 is a deficient number, since it is larger than the sum of its proper divisors (1096625198).

2191949602 is a wasteful number, since it uses less digits than its factorization.

2191949602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216800.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 2191949602 is about 46818.2614158194. The cubic root of 2191949602 is about 1299.0031020017.

The spelling of 2191949602 in words is "two billion, one hundred ninety-one million, nine hundred forty-nine thousand, six hundred two".