1997734122 has 24 divisors (see below), whose sum is σ = 4350858564. Its totient is φ = 662459904.

The previous prime is 1997734111. The next prime is 1997734129. The reversal of 1997734122 is 2214377991.

It can be written as a sum of positive squares in 2 ways, for example, as 1821667761 + 176066361 = 42681^2 + 13269^2 .

It is a super-2 number, since 2×1997734122² = 7981883244406221768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1997734129) 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, 284053 + ... + 291000.

Almost surely, 2^1997734122 is an apocalyptic number.

1997734122 is an abundant number, since it is smaller than the sum of its proper divisors (2353124442).

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

1997734122 is a wasteful number, since it uses less digits than its factorization.

1997734122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575254 (or 575251 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 1997734122 is about 44696.0190844778. The cubic root of 1997734122 is about 1259.4450655311.

The spelling of 1997734122 in words is "one billion, nine hundred ninety-seven million, seven hundred thirty-four thousand, one hundred twenty-two".