2195351990 has 32 divisors (see below), whose sum is σ = 4258832256. Its totient is φ = 809976960.

The previous prime is 2195351989. The next prime is 2195351993. The reversal of 2195351990 is 991535912.

2195351990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2195351993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188435 + ... + 199745.

It is an arithmetic number, because the mean of its divisors is an integer number (133088508).

Almost surely, 2^2195351990 is an apocalyptic number.

2195351990 is a deficient number, since it is larger than the sum of its proper divisors (2063480266).

2195351990 is a wasteful number, since it uses less digits than its factorization.

2195351990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12824.

The product of its (nonzero) digits is 109350, while the sum is 44.

The square root of 2195351990 is about 46854.5834470866. The cubic root of 2195351990 is about 1299.6748674084.

The spelling of 2195351990 in words is "two billion, one hundred ninety-five million, three hundred fifty-one thousand, nine hundred ninety".