2191401848 has 16 divisors (see below), whose sum is σ = 4149561960. Its totient is φ = 1084852000.

The previous prime is 2191401781. The next prime is 2191401851. The reversal of 2191401848 is 8481041912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1355258 + ... + 1356873.

Almost surely, 2^2191401848 is an apocalyptic number.

It is an amenable number.

2191401848 is a deficient number, since it is larger than the sum of its proper divisors (1958160112).

2191401848 is a wasteful number, since it uses less digits than its factorization.

2191401848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2712238 (or 2712234 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 2191401848 is about 46812.4112602630. The cubic root of 2191401848 is about 1298.8948888351.

The spelling of 2191401848 in words is "two billion, one hundred ninety-one million, four hundred one thousand, eight hundred forty-eight".