2195157276 has 72 divisors (see below), whose sum is σ = 5999286384. Its totient is φ = 672768000.

The previous prime is 2195157253. The next prime is 2195157299. The reversal of 2195157276 is 6727515912.

2195157276 is a `hidden beast` number, since 2 + 1 + 9 + 5 + 1 + 572 + 76 = 666.

It is an interprime number because it is at equal distance from previous prime (2195157253) and next prime (2195157299).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111151 + ... + 129401.

It is an arithmetic number, because the mean of its divisors is an integer number (83323422).

Almost surely, 2^2195157276 is an apocalyptic number.

2195157276 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2195157276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2999643192).

2195157276 is an abundant number, since it is smaller than the sum of its proper divisors (3804129108).

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

2195157276 is a wasteful number, since it uses less digits than its factorization.

2195157276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18531 (or 18526 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 2195157276 is about 46852.5055466621. The cubic root of 2195157276 is about 1299.6364419266.

The spelling of 2195157276 in words is "two billion, one hundred ninety-five million, one hundred fifty-seven thousand, two hundred seventy-six".