2197254987 has 12 divisors (see below), whose sum is σ = 3174262624. Its totient is φ = 1464629040.

The previous prime is 2197254937. The next prime is 2197254989. The reversal of 2197254987 is 7894527912.

2197254987 is a `hidden beast` number, since 2 + 1 + 97 + 2 + 549 + 8 + 7 = 666.

It is not a de Polignac number, because 2197254987 - 2⁶ = 2197254923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2197254989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76473 + ... + 101205.

Almost surely, 2^2197254987 is an apocalyptic number.

2197254987 is a deficient number, since it is larger than the sum of its proper divisors (977007637).

2197254987 is a wasteful number, since it uses less digits than its factorization.

2197254987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34610 (or 34607 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 2197254987 is about 46874.8865278627. The cubic root of 2197254987 is about 1300.0502913483.

The spelling of 2197254987 in words is "two billion, one hundred ninety-seven million, two hundred fifty-four thousand, nine hundred eighty-seven".