2197781592 has 32 divisors (see below), whose sum is σ = 5515361280. Its totient is φ = 729806240.

The previous prime is 2197781569. The next prime is 2197781633. The reversal of 2197781592 is 2951877912.

It is a super-2 number, since 2×2197781592² = 9660487852268108928, which contains 22 as substring.

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, 167784 + ... + 180407.

It is an arithmetic number, because the mean of its divisors is an integer number (172355040).

Almost surely, 2^2197781592 is an apocalyptic number.

It is an amenable number.

2197781592 is an abundant number, since it is smaller than the sum of its proper divisors (3317579688).

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

2197781592 is a wasteful number, since it uses less digits than its factorization.

2197781592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348463 (or 348459 counting only the distinct ones).

The product of its digits is 635040, while the sum is 51.

The square root of 2197781592 is about 46880.5033249431. The cubic root of 2197781592 is about 1300.1541418804.

The spelling of 2197781592 in words is "two billion, one hundred ninety-seven million, seven hundred eighty-one thousand, five hundred ninety-two".