2195237140 has 24 divisors (see below), whose sum is σ = 4620965832. Its totient is φ = 876005760.

The previous prime is 2195237123. The next prime is 2195237141. The reversal of 2195237140 is 417325912.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 85488516 + 2109748624 = 9246^2 + 45932^2 .

It is a super-2 number, since 2×2195237140² = 9638132201670759200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2195237096 and 2195237105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2195237141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121939 + ... + 138778.

It is an arithmetic number, because the mean of its divisors is an integer number (192540243).

Almost surely, 2^2195237140 is an apocalyptic number.

2195237140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2195237140 is an abundant number, since it is smaller than the sum of its proper divisors (2425728692).

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

2195237140 is a wasteful number, since it uses less digits than its factorization.

2195237140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261147 (or 261145 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2195237140 is about 46853.3578305760. The cubic root of 2195237140 is about 1299.6522028179.

The spelling of 2195237140 in words is "two billion, one hundred ninety-five million, two hundred thirty-seven thousand, one hundred forty".