2195420544 has 64 divisors (see below), whose sum is σ = 6479550000. Its totient is φ = 731805696.

The previous prime is 2195420533. The next prime is 2195420551. The reversal of 2195420544 is 4450245912.

It is a happy number.

2195420544 is a `hidden beast` number, since 2 + 1 + 95 + 4 + 20 + 544 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2195420499 and 2195420508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314169 + ... + 321080.

Almost surely, 2^2195420544 is an apocalyptic number.

2195420544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2195420544 is an abundant number, since it is smaller than the sum of its proper divisors (4284129456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2195420544 is an equidigital number, since it uses as much as digits as its factorization.

2195420544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635272 (or 635254 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 2195420544 is about 46855.3150026761. The cubic root of 2195420544 is about 1299.6883955327.

The spelling of 2195420544 in words is "two billion, one hundred ninety-five million, four hundred twenty thousand, five hundred forty-four".