1997737364 has 24 divisors (see below), whose sum is σ = 3997741440. Its totient is φ = 855687456.

The previous prime is 1997737351. The next prime is 1997737367. The reversal of 1997737364 is 4637377991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997737367) 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, 32402 + ... + 71030.

It is an arithmetic number, because the mean of its divisors is an integer number (166572560).

Almost surely, 2^1997737364 is an apocalyptic number.

1997737364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1997737364 is an abundant number, since it is smaller than the sum of its proper divisors (2000004076).

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

1997737364 is a wasteful number, since it uses less digits than its factorization.

1997737364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40487 (or 40485 counting only the distinct ones).

The product of its digits is 6001128, while the sum is 56.

The square root of 1997737364 is about 44696.0553516751. The cubic root of 1997737364 is about 1259.4457468227.

The spelling of 1997737364 in words is "one billion, nine hundred ninety-seven million, seven hundred thirty-seven thousand, three hundred sixty-four".